EP3707811B1 - Stator unit and stator module - Google Patents

Description

The invention relates to a stator module with a stator unit for driving a rotor of a planar drive system.

Planar drive systems can be used, among other things, in automation technology, in particular production technology, handling technology and process technology. A movable element of a system or machine can be moved or positioned in at least two linearly independent directions by means of planar drive systems. Planar drive systems can comprise a permanently excited electromagnetic planar motor with a planar stator and a rotor that is movable in at least two directions on the stator.

In the case of a permanently excited electromagnetic planar motor, a drive force is exerted on the rotor in that current-carrying conductors interact magnetically with drive magnets of a magnet arrangement. The invention relates in particular to configurations of planar drive systems in which the drive magnets of an electric planar motor are arranged on the rotor and the current-carrying conductors of the planar motor are arranged in a fixedly arranged planar stator.

In such a drive system, the rotor comprises at least one first magnet unit for driving the rotor in a first direction and a second magnet unit for driving the rotor in a direction that is linearly independent of the first direction, for example in one of the first direction orthogonal, second direction. The planar stator comprises at least one group of first energizable conductors, which interact magnetically with the magnets of the first magnet unit to drive the rotor in the first direction, and a group of second energizable conductors, which interact magnetically with the magnets of the second magnet unit, around the rotor to drive in the second direction. The first and second groups of conductors can generally be energized independently of one another in order to enable the rotor to move independently of one another in the first and second directions. If the conductors of the first and second group can themselves be energized independently of one another, at least in part, a plurality of rotors can be moved independently of one another on a stator at the same time.

The stator of such planar drive systems can in particular have a modular design and comprise a plurality of stator modules arranged next to one another. The current-carrying conductors of the stator can be arranged in a stator unit within the stator modules. The drive currents required for driving the rotor can be generated by power generation units which are each arranged on the undersides of the stator units opposite the rotor. The power generation units are then connected in an electrically conductive manner to the conductors of the stator unit in order to feed the drive currents generated by the power generation units into the conductors of the stator unit.

The pamphlets WO 2013/059934 A1 , WO 2015/017933 A1 , WO 2015/179962 A1 , WO 2015/184553 A1 , WO 2015/188281 A1 , WO 2017/004716 A1 each describe planar drive systems (displacement devices) which comprise an electromagnetic planar motor with a permanently excited rotor and a stator comprising several conductors that can be energized.

From the WO 2015/179962 A1 a stator module with the features of the preamble of claim 1 is known. Further prior art is in WO 2009/083891 A1 described.

The object of the present invention is to specify a stator module for a planar drive system.

This object is achieved by a stator module according to the independent claim. Further developments are given in the dependent claims.

A stator unit for driving a rotor of an electrical planar drive system in a stator module comprises a first stator sector and a second stator sector. In a stator position of the stator unit, the first stator sector comprises conductor strips which are elongated along a first direction and are arranged next to one another along a second direction oriented perpendicular to the first direction for interaction with drive magnets of the rotor. In the stator position, the second stator sector comprises conductor strips which are elongated along the first direction and which are arranged next to one another along the second direction for interaction with the drive magnets of the rotor. The first stator sector is arranged adjacent to the second stator sector in the first direction. The stator unit has a contact structure, the contact structure comprising a first contact unit group and a second contact unit group. The first contact unit group is electrically conductively connected to the conductor strips of the first stator sector and the second contact unit group is electrically conductively connected to the conductor strips of the second stator sector. The contact structure is arranged on an inner edge of the first stator sector and on an inner edge of the second stator sector, the inner edge of the first stator sector and the inner edge of the second stator sector being arranged adjacent to one another between the first stator sector and the second stator sector.

In that the contact structure is arranged on inner edges of the first and the second stator sector of the second stator sector is arranged, the contact structure can be arranged in the second direction in the interior of the stator unit. As a result, outer regions of the stator unit, which are located on the outer edges of the stator unit and on the outer edges of the first and second stator sectors, can be formed free of contact units. The stator unit can thus be designed to be particularly stable in the outer areas. In particular, the stator unit and a stator module comprising the stator unit can have tread-resistant outer edges.

Since the outer areas of the stator unit are free of contact structures, the outer edges of the stator unit can also be made particularly smooth. As a result, the stator unit can be lined up almost seamlessly to a further, identically designed stator unit. The contact structure can also be arranged in a particularly space-saving manner between the first and the second stator sector, so that in the area of the stator sectors particularly little area has to be used for the arrangement of the contact structures. As a result, the conductor strips can be arranged in a particularly large proportion of the area of the stator sectors. This avoids distortions of the magnetic field generated by the stator unit due to edge effects.

In a further development of the stator unit, the first contact unit group and the second contact unit group of the contact structure are arranged in a row next to one another along the second direction. As a result, the contact units of the contact unit groups can be arranged in a particularly space-saving manner.

In a further development of the stator unit, the contact structure is arranged on a center line of the stator unit running between the first stator sector and the second stator sector along the second direction. As a result, the contact structure can be arranged particularly far away from the outer edges of the stator unit in the first direction and the stator unit are made particularly stable. In addition, the contact structure on the center line can be arranged in a particularly space-saving manner and a particularly large proportion of the stator surface can be used for the arrangement of the conductor strips.

In a further development of the stator unit, the stator unit comprises a third stator sector, the third stator sector being arranged adjacent to the first stator sector in the second direction. In the stator position, the third stator sector comprises conductor strips arranged next to one another along the second direction and elongated along the first direction for interaction with the drive magnets of the rotor. The first stator sector, the second stator sector and the third stator sector comprise, in a further stator position, further conductor strips arranged next to one another along the first direction and elongated along the second direction for interaction with further drive magnets of the rotor. The further stator layer is arranged below the stator layer in a third direction oriented perpendicular to the first direction and to the second direction. The stator unit comprises a further contact structure with a third contact unit group and with a fourth contact unit group, wherein the third contact unit group is electrically conductively connected to the further conductor strips of the first stator sector and wherein the fourth contact unit group is electrically conductively connected to the further conductor strips of the third stator sector. The further contact structure is arranged on a further inner edge of the first stator sector and on an inner edge of the third stator sector, the further inner edge of the first stator sector and the inner edge of the third stator sector being arranged adjacent to one another between the first stator sector and the third stator sector.

Since both the contact structure and the further contact structure are arranged on inner edges of the stator sectors located between the stator sectors, both the contact structure in the first direction and the further contact structure in the second direction can be arranged inside the stator unit. In this way, both the outer edges of the stator unit running along the first direction and the outer edges of the stator unit running along the second direction can be designed to be free of contact units and thus particularly stable.

In a further development of the stator unit, the stator unit has a fourth stator sector, the fourth stator sector being arranged adjacent to the second stator sector in the second direction and the third stator sector being arranged adjacent to the fourth stator sector in the first direction. In the stator position, the fourth stator sector comprises conductor strips arranged next to one another along the second direction and elongated along the first direction for interaction with the drive magnets of the rotor. In addition, the fourth stator sector in the further stator layer comprises further conductor strips arranged next to one another along the first direction and elongated along the second direction for interaction with the further drive magnets of the rotor. The stator unit comprises an additional contact structure with a fifth contact unit group and with a sixth contact unit group and a further additional contact structure with a seventh contact unit group and with an eighth contact unit group. The fifth contact unit group is electrically conductively connected to the conductor strips of the third stator sector and the sixth contact unit group is electrically conductively connected to the conductor strips of the fourth stator sector. The seventh contact unit group is electrically conductively connected to the further conductor strips of the second stator sector and the eighth contact unit group is electrically conductively connected to the further conductor strips of the fourth stator sector. The Additional contact structure is arranged on a further inner edge of the third stator sector and on an inner edge of the fourth stator sector, the further inner edge of the third stator sector and the inner edge of the fourth stator sector being arranged adjacent to one another between the third stator sector and the fourth stator sector. The further additional contact structure is arranged on a further inner edge of the second stator sector and on a further inner edge of the fourth stator sector, the further inner edge of the second stator sector and the further inner edge of the fourth stator sector being arranged adjacent to one another between the second stator sector and the fourth stator sector.

As a result, both the conductor strips of all stator sectors extended in the first direction and the further conductor strips of all stator sectors extended in the second direction are connected to contact structures which are arranged in the interior of the stator unit in the first and second directions. In particular, outer areas of the stator unit can be formed free of contact units along all outer edges of the stator module. As a result, the entire stator module can be designed to be particularly stable along all of the outer edges.

In a development of the stator unit, the contact structure and the additional contact structure are arranged on a center line of the stator unit oriented along the second direction, and the further contact structure and the further additional contact structure are arranged on a further center line of the stator unit oriented along the first direction. As a result, the outer areas in which no contact units are arranged can be made particularly large both in the first direction and in the second direction and the stator unit can be made particularly stable overall.

In a further development of the stator unit, the stator unit has a center area arranged at a point of intersection of the center line and the further center line, the contact unit groups being arranged outside the center area of the stator unit. As a result, the contact structure and the further contact structure can be arranged along the first direction at a first distance from one another around the intersection point. Likewise, the additional contact structure and the further additional contact structure can be arranged along the second direction at a second distance from one another around the intersection point. The first distance and / or the second distance can be dimensioned such that when a power module is connected to the contact structures, in particular when the power module is pressed with the contact structures, tilting of the power module or uneven loading of the contact structures is prevented. In addition, a distance means that the contact structures and the power module can be pressed with little effort.

In a further development of the stator unit, a central conductor strip of the conductor strips of the first stator sector arranged in a connection stator layer is electrically conductively connected to a contact unit of the first contact unit group via a feed line. The supply line is arranged in an additional stator layer of the stator unit.

Further conductor strips of the conductor strips of the first stator sector can in particular be connected to contact units of the first contact unit group on the connection stator layer. Since the central conductor strip of the first stator sector is connected to the contact unit of the first contact unit group via the supply line arranged in the additional stator layer, more space is available on the connection stator layer for connecting the further conductor strips to the first contact unit group. This makes it easier to connect the conductor strips of the first stator sector to the first contact unit group.

A stator module comprises a stator unit for driving a rotor of an electrical planar drive system and a power module. The stator unit includes a first stator sector, a second stator sector and a third stator sector. In a stator position of the stator unit, the first stator sector, the second stator sector and the third stator sector comprise conductor strips arranged next to one another along a first direction and elongated along a second direction perpendicular to the first direction for interaction with drive magnets of the rotor. The first stator sector, the second stator sector, the third stator sector also comprise further conductor strips arranged next to one another in a further stator position along the second direction and elongated along the first direction for interaction with further drive magnets of the rotor. The first stator sector is arranged adjacent to the second stator sector in the second direction and the third stator sector is arranged adjacent to the first stator sector in the first direction. The stator unit has a contact structure and a further contact structure. The contact structure comprises a first contact unit group which is electrically conductively connected to the conductor strips of the first stator sector. In addition, the contact structure comprises a second contact unit group which is electrically conductively connected to the conductor strips of the second stator sector. The further contact structure comprises a third contact unit group which is electrically conductively connected to the further conductor strips of the first stator sector. In addition, the further contact structure comprises a fourth contact unit group which is electrically conductively connected to the further conductor strips of the third stator sector. The contact structure is arranged on an inner edge of the first stator sector and on an inner edge of the second stator sector, the inner edge of the first stator sector and the inner edge of the second stator sector are arranged adjacent to one another between the first stator sector and the second stator sector. The further contact structure is arranged on a further inner edge of the first stator sector and on an inner edge of the third stator sector, the further inner edge of the first stator sector and the inner edge of the third stator sector being arranged adjacent to one another between the first stator sector and the third stator sector. The power module is arranged on an underside of the stator unit. The power module is cross-shaped with a first bar running in the first direction and with a second bar running in the second direction. The power module comprises a connection arrangement, wherein the connection arrangement is electrically conductively connected to the first contact unit group and to the second contact unit group of the contact structure of the stator unit, and wherein the connection arrangement is arranged on the second bar of the power module. In addition, the power module comprises a further connection arrangement, wherein the further connection arrangement is electrically conductively connected to the third contact unit group and to the fourth contact unit group of the further contact structure of the stator unit and wherein the further connection arrangement is arranged on the first bar of the power module.

Since the power module is designed in a cross shape, the power module can be arranged directly under the contact structure arranged between the first and the second stator sector and under the further contact structure arranged between the first and the third stator sector. On the other hand, the power module can be made particularly compact. In particular, free spaces can be formed below the stator unit on the outer edges of the stator sectors and the stator unit, in which the stator unit is exposed and is not covered by the power module. In the free spaces, heat conduction structures can rest on the underside of the stator unit, in order to absorb heat losses generated in the conductor strip when the rotor is driven and to dissipate it from the stator unit.

In a further development of the stator module, the connection arrangement is arranged centrally in the first direction on the second bar of the power module and the further connection arrangement is arranged centrally on the first bar of the power module in the second direction. As a result, particularly large free spaces can be formed between the bars of the power module and the outer edges of the stator unit, in which the stator unit is not covered by the power module on its underside.

In a further development of the stator module, the power module comprises a module unit and a further module unit, the module unit and the further module unit being designed to be mechanically separate from one another. The first bar of the power module encompasses the further module unit and the further module unit encompasses the further connection arrangement. In addition, the second bar of the power module includes the module unit and the module unit includes the connection arrangement.

As a result, the module unit and the further module unit can be connected to the stator unit separately from one another and one after the other during the production of the stator module. This makes it possible to connect the power module to the stator unit in a particularly simple manner. In particular, it can be avoided that the power module has to be connected at the same time to the contact structure running along the second direction and to the further contact structure running along the first direction and thereby canted.

In a further development of the stator module, one conductor arrangement is the module unit and one conductor arrangement is the other Module unit identical. As a result, the same components, in particular the same carrier boards or printed circuit boards, can be used for the module unit and for the further module unit, so that the stator module can be produced cost-effectively.

Fig. 1

ein Planarantriebssystem mit einem Statormodul und einem Läufer;

Fig. 2

eine Ansicht eines weiteren Planarantriebssystems mit sechs nebeneinander angeordneten Statormodulen;

Fig. 3

den Läufer des Planarantriebssystems mit einer Magnetanordnung;

Fig. 4

eine perspektivische Ansicht des Statormoduls des Planarantriebssystems;

Fig. 5

eine Explosionsansicht einer Statoreinheit des Statormoduls mit einer ersten, zweiten, dritten und vierten Statorlage;

Fig. 6

die Statorlagen des ersten Statorsektors der Statoreinheit mit einzelnen Statorsegmenten;

Fig. 7

eine Aufsicht auf die erste Statorlage des ersten Statorsektors der Statoreinheit;

Fig. 8

eine Aufsicht auf die zweite Statorlage des ersten Statorsektors der Statoreinheit;

Fig. 9

ein Ersatzschaltbild der ersten Statorsegmente des ersten Statorsektors;

Fig. 10

ein Ersatzschaltbild der zweiten Statorsegmente des ersten Statorsektors;

Fig. 11

ein Ersatzschaltbild des ersten Statorsektors;

Fig. 12

eine Aufsicht auf die Statoreinheit des Statormoduls;

Fig. 13

eine Aufsicht auf eine erste weitere Statoreinheit;

Fig. 14

eine Aufsicht auf eine zweite weitere Statoreinheit;

Fig. 15

eine Aufsicht auf eine Anschlussstatorlage der Statoreinheit;

Fig. 16

eine perspektivische Darstellung einer Unterseite eines Leistungsmoduls des Statormoduls;

Fig. 17

eine perspektivische Darstellung einer Unterseite der Statoreinheit des Statormoduls;

Fig. 18

eine perspektivische Darstellung der Unterseiten des Leistungsmoduls und der Statoreinheit.

The invention is explained in more detail below using exemplary embodiments and with reference to figures. They each show a schematic representation

Fig. 1

a planar drive system with a stator module and a rotor;

Fig. 2

a view of a further planar drive system with six stator modules arranged next to one another;

Fig. 3

the rotor of the planar drive system with a magnet arrangement;

Fig. 4

a perspective view of the stator module of the planar drive system;

Fig. 5

an exploded view of a stator unit of the stator module with a first, second, third and fourth stator layer;

Fig. 6

the stator layers of the first stator sector of the stator unit with individual stator segments;

Fig. 7

a plan view of the first stator position of the first stator sector of the stator unit;

Fig. 8

a plan view of the second stator position of the first stator sector of the stator unit;

Fig. 9

an equivalent circuit diagram of the first stator segments of the first stator sector;

Fig. 10

an equivalent circuit diagram of the second stator segments of the first stator sector;

Fig. 11

an equivalent circuit diagram of the first stator sector;

Fig. 12

a plan view of the stator unit of the stator module;

Fig. 13

a plan view of a first further stator unit;

Fig. 14

a plan view of a second further stator unit;

Fig. 15

a plan view of a connection stator layer of the stator unit;

Fig. 16

a perspective view of an underside of a power module of the stator module;

Fig. 17

a perspective view of an underside of the stator unit of the stator module;

Fig. 18

a perspective view of the undersides of the power module and the stator unit.

The invention essentially relates to further developments of the publications WO 2013/059934 A1 , WO 2015/017933 A1 , WO 2015/179962 A1 , WO 2015/184553 A1 , WO 2015/188281 A1 and WO 2017/004716 A1 disclosed planar propulsion systems.

Fig. 1 shows a planar drive system 1 with a stator module 10 and a rotor 200. The stator module 10 comprises a module housing 19 and a stator unit 100. The stator module 10 has an upper side 8 and an underside 9 opposite the upper side 8. The stator unit 100 is arranged in a vertical direction 15 oriented from the bottom 9 to the top 8 above the module housing 19 and on the top 8 of the stator module 10. The stator unit 100 is designed as a planar stator and has a flat, ie planar, stator surface 11 on the upper side 8 of the stator module 10. The stator surface 11 at the same time forms a surface of the stator module 10.

The stator surface 11 is oriented perpendicular to the vertical direction 15 and extends over the entire top side 8 of the stator unit 100 and of the stator module 10. The stator unit 100 comprises at least one conductor strip 125 on the stator surface 11 that can be acted upon by a drive current shown, have a plurality of conductor strips 125 on the stator surface 11. The conductor strips 125 can each have a drive current applied to them. A magnetic field can be generated by means of the drive currents in the conductor strips 125, which the rotor 200 interacts with in Fig. 1 drives not shown drive magnets of the rotor 200. The rotor 200 and the stator unit 100 with the conductor strips 125 through which current flows form an electromagnetic planar motor. The conductor strips 125 form coil conductors of the stator unit 100 and can also be referred to as coil conductors.

The rotor 200 is movably arranged during operation over the stator surface 11 of the stator module 10 and can be driven both in a first direction 12 and in a second direction 14 during operation. The first direction 12 and the second direction 14 are linearly independent. In particular, the first direction 12 and the second direction 14, as in FIG Fig. 1 shown, be aligned perpendicular to each other. The first direction 12 and the second direction 14 are each oriented parallel to the stator surface 11 and perpendicular to the vertical direction 15. Since the rotor 200 is driven at the same time in the first direction 12 and in the second direction 14, the rotor 200 can be driven in any direction via the stator surface 11. The rotor 200 can be kept floating above the stator surface 11 during operation, for example by means of a magnetic interaction between the drive magnets and suitable drive currents in the conductor strips 125 the third, vertical direction 15 is possible.

The stator surface 11 is rectangular. In particular, the stator surface 11, as shown, can be designed to be square. The stator surface 11 is delimited by four straight outer edges 30 in each case. In each case two opposite outer edges 30 are parallel to the first direction 12 and two further outer edges 30 lying opposite one another are oriented parallel to the second direction 14.

An extension of the stator unit 100 in the vertical direction 15 is smaller than an extension of the stator unit 100 in the first and second directions 12, 14. The stator unit 100 therefore forms a flat cuboid or a parallelepiped in the first and second directions 12, 14 the first and second directions 12, 14 expanded plate. Between the stator surface 11 and an underside of the stator unit 100 opposite the stator surface 11, the stator unit 100 has four flat side surfaces 32, which are flush with the outer edges 30 of the stator surface 11 on the stator surface 11. The side surfaces 32 of the stator unit 100 are oriented perpendicular to the stator surface 11.

The module housing 19, like the stator surface 11 and the stator unit 100, is rectangular in a plan view of the stator surface 11. The module housing 19 is designed to be square, in particular when viewed from above on the stator surface 11. The module housing 19 is designed as a flat cuboid or as a plate, the extent of the module housing 19 in the vertical direction 15 being smaller than in the first and second directions 12, 14. A top of the module housing 19 facing the stator unit 100 is on the underside of the stator unit 100 is then arranged. In the first and second directions 12, 14, the stator unit 100 and the module housing 19 have essentially the same dimensions.

Between the upper side of the module housing 19 facing the stator unit 100 and an underside of the module housing 19 opposite the upper side, the module housing 19 has four flat side surfaces 34 in each case. The side surfaces 34 of the module housing 19 can, as shown, be oriented perpendicular to the stator surface 11. The side surfaces 34 of the module housing 19 can be aligned with the side surfaces 32 of the stator unit 100 and connect to the side surfaces 32 of the stator unit 100. In an alternative embodiment of the stator module 10, the side surfaces 34 of the module housing 19 can also be arranged set back into the interior of the stator module 10 with respect to the side surfaces 32 of the stator unit 100. In a further alternative embodiment, the side surfaces 34 of the module housing 19 can also be arranged on the upper side of the module housing 19 adjacent to the side surfaces 32 of the stator unit 100 and taper counter to the vertical direction 15 towards the underside of the module housing 19 in the direction of the interior of the stator module 10 .

The stator module 10 is rectangular in a plan view of the stator surface 11. The stator module 10 has four flat side surfaces 36 in each case between the stator surface 11 arranged on the upper side 8 of the stator module 10 and the lower side 9 of the stator module 10 opposite the upper side 8. The side surfaces 36 of the stator module 10 are formed in the region of the stator unit 100 by the side surfaces 32 of the stator unit 100 and in the region of the module housing 19 by the side surfaces 34 of the module housing 19.

The side surfaces 36 of the stator module 10 thus end on the stator surface 11 with the outer edges 30 of the stator surface 11 and the outer edges 30 of the stator surface 11 at the same time form outer edges of the stator module 10 on the stator surface 11. In particular, the stator surface 11 extends in the first direction 12 and 14 in the second direction 14 between two of the side surfaces 36 of the stator module 10 and the outer edges 30 limit the extent of the stator surface 11, the stator unit 100 and the stator module 10 on the side surfaces 36 of the stator module 10 in the first direction 12 and in the second direction 14 .

The side surfaces 36 of the stator module 10 can, as shown, each be aligned perpendicular to the stator surface 11. In alternative embodiments of the stator module 10, the side surfaces 36 of the stator module 10 in the area of the module housing 19 can also be set back in the direction of the interior of the stator module 10 or taper from the top 8 to the bottom 9 in the direction of the interior of the stator module 10.

While the stator module 10 is flat on its surface formed by the stator surface 11, the stator module 10 may not be flat or uneven on the underside 9 of the stator module 10 opposite the stator surface 11. In particular, further components can be arranged on the module housing 19 or the stator module 10 on the underside 9 of the stator module 10 or on the underside of the module housing 19. These further components extend in the first direction 12 or in the second direction 14 at most to the outer edges 30 of the stator unit 100, so that the further components do not protrude beyond the outer edges 30 of the stator unit 100 in the first or second direction 12, 14.

On the underside of the module housing 19 are in Fig. 1 Connections (not shown) arranged for connecting the stator module 10 to a plurality of connection lines 18. The connection lines 18 can include, for example, an input line of a data network, an output line of the data network and an energy supply line for supplying the stator module 10 with electrical energy. In particular, electrical energy for generating the drive currents can be supplied to the stator module 10 via the energy supply line. The stator module 10 can be connected to a control unit of the planar drive system via the data network and can exchange control data for controlling the rotor 200 with the control unit.

The stator surface 11 can have an extension between 100 mm and 500 mm in the first direction 12, in particular between 120 mm and 350 mm, in particular 240 mm. The stator surface 11 can have an extension between 100 mm and 500 mm, in particular between 120 mm and 350 mm, in particular 240 mm, in the second direction 12. The stator module 10 can have an extension between 10 mm and 100 mm, in particular between 15 mm and 60 mm, in particular 30 mm, in the vertical direction 15. The module housing 19 can have an extension between 8 mm and 80 mm, in particular between 13 mm and 55 mm, in particular 26.6 mm, in the vertical direction 15. The module housing 19 can have the same extent as the stator surface 11 in the first and / or second direction 12, 14.

Several copies of the stator module 10 can be arranged next to one another in such a way that the outer edges 30 of adjacent stator modules 10 lie against one another and the stator surfaces 11 of the stator modules 10 form a coherent work surface over which the rotor 200 can be moved without interruption. Since the side surfaces 36 of the stator module 10 end flush with the stator surface 11 at the outer edges 30, the stator surfaces 11 of two stator modules 10 arranged next to one another can be arranged almost seamlessly next to one another by the stator modules 10 with adjacent side surfaces 32 of the stator units 100 or adjacent outer edges 30 of the stator surfaces 11 are arranged.

Fig. 2 FIG. 4 shows a view of a further planar drive system 3 with six stator modules 10 arranged next to one another. The stator modules 10 are designed like that in FIG Fig. 1 The stator modules 10 are arranged next to one another in two first rows lying next to one another in the first direction 12 and extending along the second direction 14 and in three second rows or columns extending next to one another in the second direction 14 and extending along the first direction 12. Neighbors Stator modules 10 are each arranged adjacent to one another in such a way that the outer edges 30 of the stator surfaces 11 of adjacent stator modules 10 lie against one another. The stator surfaces 11 of the stator modules 10 thereby form a coherent, planar working surface for the rotor 200. The rotor 200 can be moved seamlessly from the stator surface 11 of one of the stator modules 10 onto or over the stator surface 11 of the adjacent stator module 10.

The stator modules 10 can in principle be joined together in the first and second directions 12, 14 to form planar drive systems of any size. Control signals and / or energy can be supplied to each of the stator modules 10 via their own connecting lines 18. Alternative embodiments of the stator modules 10, not shown here, can also have electrical connection elements, by means of which control signals and / or electrical energy can be transmitted from one stator module 10 to the adjacent stator module 10. Such connecting elements can be arranged, for example, on the side surfaces 33 of the stator modules 10. The connecting elements can be designed as plug connectors or as contact surfaces that can be arranged next to one another.

In alternative embodiments of the further planar drive system 3, the stator modules 10 can also be connected to a central energy supply device and / or a central control unit in a star shape via their own connection lines.

Fig. 3 shows the rotor 200 of the planar drive system 1 in a view from below of an underside of the rotor 200. During the operation of the planar drive system 1, the underside of the rotor 200 is arranged facing the stator surface 11 of the stator module 10. The rotor 200 has a magnet arrangement 201 on the underside. The magnet arrangement 201 is rectangular, in particular square, and comprises a plurality of magnets. The underside of the rotor 200 is, in particular in the area of the magnets of the magnet arrangement 201, designed flat or planar. During operation, the underside of the rotor 200 with the magnet arrangement 201 is oriented essentially parallel to the stator surface 11 and is arranged facing the stator surface 11.

The magnet arrangement 201 comprises a first magnet unit 210, a second magnet unit 220, a third magnet unit 230 and a fourth magnet unit 240. The first magnet unit 210 and the third magnet unit 230 each have an elongated extension in a first rotor direction 206 and along a first rotor direction 206 perpendicularly oriented second rotor direction 208 on drive magnets 211 arranged next to one another. In particular, the first and the third magnet unit 210, 230 can each have three drive magnets 211. The second magnet unit 220 and the fourth magnet unit 240 each have further drive magnets 221 arranged next to one another in the first rotor direction 206 and elongated along the second rotor direction 208. The first and third magnet units 210, 230 are used during operation to drive the rotor 200 in the second rotor direction 208 and the second and fourth magnet units 220, 240 are used during operation to drive the rotor 200 in the first rotor direction 206 third magnet unit 210, 230 and the further drive magnets 221 of the second and fourth magnet units 220, 240 are each magnetized perpendicular to the first and second rotor directions 206, 208.

Fig. 4 shows the stator module 10 of the planar drive system 1 in a perspective view without the rotor 200. The stator unit 100 of the stator module 10 comprises a first stator sector 110, a second stator sector 112, a third stator sector 113 and a fourth stator sector 114. The stator sectors 110, 112, 113 , 114 in turn each comprise a part of the conductor strips 125 arranged on the stator surface 11 of the stator unit 100. Each of the conductor strips 125 on the stator surface 11 is completely in one of the stator sectors 110, 112, 113, 114 arranged. The stator sectors 110, 112, 113, 114 are rectangular. In particular, the stator sectors 110, 112, 113, 114 can be square, so that an extension of the stator sectors 110, 112, 113, 114 in the first direction 12 corresponds to an extension of the stator sectors 110, 112, 113, 114 in the second direction 14 .

The stator sectors 110, 112, 113, 114 are arranged in the first direction 12 in two adjacent rows and in the second direction 14 also in two adjacent rows adjoining one another. The stator sectors 110, 112, 113, 114 of adjacent rows are also each arranged adjacent to one another. In the first direction 12, the stator unit 100 comprises a row with the second stator sector 112 and the first stator sector 110 and a further row with the fourth stator sector 114 and the third stator sector 113. In the second direction 14, the stator unit 100 comprises a row with the first Stator sector 110 and the third stator sector 113 and a further row with the second stator sector 112 and the fourth stator sector 114.

The stator sectors 110, 112, 113, 114 each have an extension in the first direction 12 and in the second direction 14 which is half the size of an extension of the stator unit 100 or an extension of the stator module 10 in the corresponding direction 12, 14. The boundaries of the stator sectors 110, 112, 113, 114 thus run in the first and second directions 12, 14 each in the middle of the stator unit 100 and intersect in the center of the stator unit 100. The stator sectors 110, 112, 113, 114 each comprise a quarter of the area, ie one quadrant, of the stator unit 100.

Within the stator sectors 110, 112, 113, 114, the conductor strips 125 are in a plurality of stator layers lying one above the other or stator planes, each of the stator layers only comprising conductor strips which are elongated either essentially along the first direction 12 or essentially along the second direction 14. Apart from the extension of the conductor strips and provided that no differences are described below, the stator sectors 110, 112, 113, 114 are designed identically on the different stator layers. At the in Fig. 4 The stator unit 100 of the stator module 10 shown in the figure, the stator layer on the stator surface 11 only comprises conductor strips 125, which are elongated along the first direction 12 and are arranged next to one another and adjoining one another along the second direction 14.

In the Fig. 4 The visible stator position on the stator surface 11 forms a first stator position of the stator unit 100. In the vertical direction 15 below the first stator position, the stator unit 100 also includes at least one second stator position.

Fig. 5 shows a schematic perspective illustration of an exploded view of the stator unit 100 with the individual stator layers.

In the vertical direction 15, the stator unit 100 comprises a second stator layer 105 under the first stator layer 104 arranged on the stator surface 11, a third stator layer 106 under the second stator layer 105 and a fourth stator layer 107 under the third stator layer 106. Unless the differences are described below are, the second, third and fourth stator layers 105, 106, 107 are formed like those in FIG Fig. 4 First stator layer 104 shown on the stator surface 11 of the stator unit 100.

The first stator layer 104 can generally also be referred to as a stator layer of the stator unit 100. The second stator layer 105 can generally also be referred to as a further stator layer of the stator unit 100.

In the third stator layer 106, as in the first stator layer 104, the stator sectors 110, 112, 113, 114 comprise conductor strips 125 which are elongated along the first direction 12 and are arranged next to and adjoining one another in the second direction 14 In the fourth stator layer 107, the stator sectors 110, 112, 113, 114 include further conductor strips 126. Unless differences are described below, the further conductor strips 126 are designed like the conductor strips 125 in the first stator layer 104 and in the third stator layer 106. Different as the conductor strips 125 of the first and third stator layers 104, 106, the further conductor strips 126 of the second and fourth stator layers 105, 107 are elongated along the second direction 14 and arranged next to one another and adjoining one another in the first direction 12.

The stator sectors 110, 112, 113, 114 in the first and third stator layers 104, 106 exclusively include the conductor strips 125 elongated along the first direction 12 and not additionally the further conductor strips 126 elongated along the second direction 14 Stator sectors 110, 112, 113, 114 in the second and fourth stator layers 105, 107 exclusively the further conductor strips 126 elongated along the second direction 14 and not also additionally the conductor strips 125 elongated along the first direction 12.

The stator sectors 110, 112, 113, 114 each have the same dimensions in all stator layers 104, 105, 106, 107. In particular, the stator sectors 110, 112, 113, 114 in all stator positions 104, 105, 106, 107 in the first direction 12 and in the second direction 14 each have the same dimensions.

The conductor strips 125, 126 of stator layers 104, 105, 106, 107 arranged one above the other are each designed to be electrically insulated from one another. For example, the stator layers 104, 105, 106, 107 can each be designed as conductor track layers of a multi-layer printed circuit board that are insulated from one another.

The stator sectors 110, 112, 113, 114 are designed to be energized independently of one another. In particular, the conductor strips 125 and the further conductor strips 126 of the stator sectors 110, 112, 113, 114 on the stator unit 100 are designed to be electrically insulated from one another. This means in particular that the conductor strips 125, 126 of the first stator sector 110 are electrically insulated from the conductor strips 125, 126 of the second stator sector 112, from the conductor strips 125, 126 of the third stator sector 113 and from the conductor strips 125, 126 of the fourth stator sector 114 . In addition, the conductor strips 125, 126 of the second stator sector 112 are electrically insulated from the conductor strips 125, 126 of the first stator sector 110, from the conductor strips 125, 126 of the third stator sector 113 and from the conductor strips 125, 126 of the fourth stator sector 114. In addition, the conductor strips 125, 126 of the third stator sector 113 are electrically insulated from the conductor strips 125, 126 of the first stator sector 110, from the conductor strips 125, 126 of the second stator sector 112 and from the conductor strips 125, 126 of the fourth stator sector 114. Finally, the conductor strips 125, 126 of the fourth stator sector 114 are electrically insulated from the conductor strips 125, 126 of the first stator sector 110, from the conductor strips 125, 126 of the second stator sector 112 and from the conductor strips 125, 126 of the third stator sector 113.

While the conductor strips 125, 126 of the individual stator sectors 110, 112, 113, 114 on the stator unit 100 are each electrically insulated from the conductor strips 125, 126 of the remaining stator sectors 110, 112, 113, 114, the conductor strips 125, 126 within the individual stator sectors 110, 112, 113, 114 can each be connected to one another in an electrically conductive manner. In particular, conductor strips 125 of the first stator layer 104 and the third stator layer 106, which are located one above the other, can be connected to one another in an electrically conductive manner within the stator sectors 110, 112, 113, 114. For example, each superposed conductor strips 125 of the stator sectors 110, 112, 113, 114 can be connected in series. Likewise, within the stator sectors 110, 112, 113, 114, further conductor strips 126 of the second stator layer 105 and the fourth stator layer 107, which are located one above the other, can be connected to one another in an electrically conductive manner. For example, further conductor strips 126 of the stator sectors 110, 112, 113, 114 which are located one above the other can be connected in series

Alternative embodiments of the stator unit 100 can comprise further stator layers arranged one below the other in the vertical direction 15 between the second and third stator layers 105, 106. In this case, the stator unit 100 in the vertical direction 15 can comprise alternating stator layers with conductor strips 125 elongated essentially along the first direction 12 and stator layers with further conductor strips 126 elongated essentially along the second direction 14. In addition, in alternative embodiments of the stator unit 100 between the first and the second stator layer 104, 105 and / or between the third and the fourth stator layer 106, 107 further stator layers with conductor strips 125 extended along the first direction 12 or with conductor strips 125 extended along the second direction 14 further conductor strips 126 may be arranged.

The conductor strips 125, 126 of the stator sectors 110, 112, 113, 114 are each combined to form stator segments within the stator layers 104, 105, 106, 107.

Fig. 6 shows a schematic representation of the stator layers 104, 105, 106, 107 of the first stator sector 110 with the individual stator segments.

The conductor strips 125, 126 of the first stator sector 110 are combined within the stator layers 104, 105, 106, 107 to form stator segments 120, 121. The first stator sector 110 comprises in each stator layer 104, 105, 106, 107 three stator segments 120, 121 arranged next to one another and adjoining one another. Each of the stator segments 120, 121 comprises six conductor strips 125, 126 arranged next to one another The first and third stator layers 104, 106 each have three first stator segments 120 and the second and fourth stator layers 105, 107 each have three second stator segments 121. The first stator segments 120 each comprise six juxtaposed of those arranged next to one another along the second direction 14 and along the first direction 12 elongated conductor strips 125. The second stator segments 121 each comprise six juxtaposed of the further conductor strips 126 arranged next to one another along the first direction 12 and elongated along the second direction 14.

The first stator sector 110 of the stator unit 100 thus comprises exclusively conductor strips 125 in the first stator layer 104 and in the third stator layer 106, which are elongated along the first direction 12, and exclusively further conductor strips 126 in the second stator layer 105 and in the fourth stator layer 107 which are elongated along the second direction 14.

The first and second stator segments 120, 121, apart from their orientation, have identical dimensions. In particular, the dimensions of the first stator segments 120 in the first direction 12 correspond to the dimensions of the second stator segments 121 in the second direction 14 and the dimensions of the first stator segments 120 in the second Direction 14 correspond to the dimensions of the second stator segments 121 in the first direction 12.

The stator segments 120, 121 are arranged one above the other in such a way that each of the first stator segments 120 of the first and third stator layers 104, 106 of the first stator sector 110 extends in the first direction 12 via the three second stator segments 121 of the second and fourth stator layer 105, 107 of the first stator sector 110. In addition, the second stator segments 121 of the second and fourth stator layers 105, 107 of the first stator sector 110 extend in the second direction 14 over all of the first stator segments 120 of the first and third stator layers 104, 106 of the first stator sector 110 arranged next to one another in the second direction 14.

The arrangement of the conductor strips 125, 126 in the stator layers 104, 105, 106, 107 of the second stator sector 112, the third stator sector 113 and the fourth stator sector 114 corresponds to that in FIG Fig. 6 The illustrated arrangement of the conductor strips 125, 126 in the stator layers 104, 105, 106, 107 of the first stator sector 110.

During operation of the planar drive system 1, the rotor 200 can be oriented above the stator unit 100 in such a way that the first rotor direction 206 is oriented along the first direction 12 and the second rotor direction 208 is oriented along the second direction 14. During operation, the first magnet unit 210 and the third magnet unit 230 can interact with the magnetic field generated by the conductor strips 125 of the first stator segments 120 in order to drive the rotor 200 along the second direction 14. During operation, the second magnet unit 220 and the fourth magnet unit 240 can interact with the magnetic field generated by the further conductor strips 126 of the second stator segments 121 in order to drive the rotor 200 along the first direction 12.

Alternatively, unlike in FIG Fig. 6 shown, also be oriented such that the first rotor direction 206 is oriented along the second direction 14 and the second rotor direction 208 is oriented along the first direction 12. In this case, the first and third magnet units 210, 230 act with the magnetic field of the second stator segments 121 to drive the rotor 200 in the first direction 12 and the second and fourth magnet units 220, 240 act with the magnetic field of the first stator segments 120 to drive the Runner 200 in the second direction 14 together.

The conductor strips 125, 126 of the individual stator segments 120, 121 can each be energized with the drive currents independently of the conductor strips 125, 126 of the other stator segments 120, 121. In particular, the drive currents in one of the stator segments 120, 121 do not necessarily depend on the drive currents in another of the stator segments 120, 121. In addition, the conductor strips 125, 126 of one of the stator segments 120, 121 can have drive currents applied to them, while the conductor strips 125, 126 of another, for example an adjacent, stator segment 120, 121 are de-energized. The conductor strips 125, 126 of the individual stator segments 120, 121 are designed on the stator unit 100 to be electrically insulated from the conductor strips 125, 126 of the other stator segments 120, 121. The conductor strips 125, 126 of different stator segments 120, 121 can, for example, have the drive currents applied to them from separate power modules or from separate power generation units or output stages of a power module of the stator module 10.

The conductor strips 125, 126 in the individual stator sectors 110, 112, 113, 114 can each be interconnected to form multiphase systems with a common star point. The star point can be formed on the stator unit 100. In particular, the conductor strips 125, 126 can be interconnected to form three-phase systems with a common star point. The three-phase systems can each have six Adjacent conductor strips 125 or six adjacent further conductor strips 126 comprise. The number of adjacent conductor strips 125, 126 in one of the three-phase systems can also be three, twelve or some other multiple of three.

The multiphase systems can be contacted on the stator unit 100 in such a way that each of the multiphase systems can be supplied with a drive current independently of the other multiphase systems. Alternatively, two or more of the multiphase systems on the stator unit 100 can also be connected to one another in such a way that the connected multiphase systems are each acted upon by a common drive current. For example, the connected multiphase systems on the stator unit 100 can be connected in series or in parallel.

When the conductor strips 125, 126 are interconnected to form multiphase systems, fewer contacts are required to energize the conductor strips 125, 126 than when the individual conductor strips 125, 126 are energized separately the power generation units required for energization, reduced.

The stator sectors 110, 112, 113, 114 can, as in FIGS Fig. 4 and 5 shown, each include eighteen conductor strips 125, 126 in each stator layer 104, 105, 106, 107. Six adjacent conductor strips 125, 126 can be connected to form a three-phase system and the stator sectors 110, 112, 113, 114 can each comprise three three-phase systems lying next to one another in the first direction 12 and three three-phase systems each lying next to one another in the second direction 14. In this case, conductor strips 125, 126, which are essentially extended in the same direction 12, 14 and lie one above the other in the stator layers 104, 105, 106, 107, can be in series to form a common three-phase system be interconnected. The conductor strips 125, 126 can be connected in such a way that conductor strips 125, 126 lying one above the other in the vertical direction 15 are each acted upon with the same drive current. The three-phase systems thus have three phases which are interconnected from conductor strips 125, 126 lying one above the other in the stator layers 104, 105, 106, 107.

For example, in the individual stator layers 104, 105, 106, 107, all of the conductor strips 125, 126, which are located one above the other and are aligned in parallel, can be connected in series. In particular, the conductor strips 125 from three-phase systems lying one above the other in the first stator layer 104 and in the third stator layer 106, and the further conductor strips 126 from three-phase systems lying one above the other in the second stator layer 105 and in the fourth stator layer 107 can each be connected in series to form a common three-phase system. In this case, all of the conductor strips 125, 126 of the first and third stator layers 104, 106 and the second and fourth stator layers 105, 107 lying one above the other and oriented in parallel can be connected in series.

In particular, in the stator unit 100 within the individual stator segments 120, the conductor strips 125 elongated along the first direction 12 are each interconnected to form multiphase systems with a common star point. The individual multiphase systems of different stator segments 120 can each be energized independently of one another. Likewise, all further conductor strips 126 of the individual further stator segments 121 are each interconnected to form further multiphase systems. The individual further multiphase systems of the further stator segments 121 can each be energized independently of one another and independently of the multiphase systems of the stator segments 120. In particular, the conductor strips 125 of the stator segments 120 and the further conductor strips 126 of the further stator segments 121 are each connected to form three-phase systems. The ladder strips 125 and the further conductor strips 126 can each have a three-phase drive current applied to them. The drive currents include a first phase U, a second phase V and a third phase W, each of which has a phase offset of 120 ° with respect to one another.

The conductor strips 125 are spatially offset in the second direction 14 by a third of the effective wavelength of the drive magnets 211 of the first and third magnet units 210, 230 interacting with the conductor strips 125. The further conductor strips 126 are spatially offset in the first direction 12 by a third of the effective further wavelength of the further drive magnets 221 of the second and fourth magnet units 220, 240 interacting with the further conductor strips 126.

Fig. 7 FIG. 8 shows a plan view of the first stator layer 104 of the first stator sector 110. Fig. 8 shows a plan view of the second stator layer 105 of the first stator sector 110. In FIG Fig. 7 and in Fig. 8 the distribution of the phases U, V, W on the conductor strips 125, 126 of the first and second stator segments 120, 121 of the first stator sector 110 is shown. The stator segments 120, 121 each have a first forward conductor 131 and a first return conductor 132 for the first phases U of the drive currents, a second forward conductor 141 and a second return conductor 142 for the second phases V of the drive currents and a third forward conductor 146 and a third return conductor 147 for the third phases W of the drive currents. Since the individual stator segments 120, 121 can each be energized independently of one another, the drive currents with which the individual stator segments 120, 121 are acted upon can be different. In particular, the individual first phases U, with which the various stator segments 120, 121 are acted upon, can be different. In addition, the individual second phases V, with which the various stator segments 120, 121 are acted upon, and the individual third phases W with which the various stator segments 120, 121 are acted upon, may be different.

The forward conductors 131, 141, 146 and the return conductors 132, 142, 147 of the individual stator segments 120, 121 are each arranged next to one another along a width direction of the stator segments 120, 121. The in Fig. 7 The first stator segments 120 illustrated corresponds to the width direction of the second direction 14. In the case of the in FIGS Fig. 8 The second stator segments 121 illustrated, the width direction runs parallel and opposite to the first direction 12.

The first forward conductor 131 is each arranged on a first longitudinal side of the stator segments 120, 121. In the case of the first stator segments 120, the first longitudinal side is oriented along the first direction 12 and in the case of the second stator segments 121 along the second direction 14. Following the first outward conductor 131, the third return conductor 147, the second outward conductor 141, the first return conductor 132, the third outward conductor 146 and the second return conductor 142 are arranged next to and adjacent to one another in the width direction of the stator segments 120, 121.

The first phase U is in the stator segments 120, 121 on the first forward conductor 131 from a first side of the stator segments 120, 121 to a second side of the stator segments 120, 121 opposite the first side and on the first return conductor 132 from the second side to the first page. The second phase V is conducted on the second forward conductor 141 from the first side of the stator segments 120, 121 to the second side of the stator segments 120, 121 and on the second return conductor 142 from the second side to the first side. The third phase W is conducted on the third forward conductor 146 from the first side of the stator segments 120, 121 to the second side of the stator segments 120 and on the third return conductor 147 from the second side to the first side.

The phases U, V and W are thus each fed on the first side of the stator segments 120, 121 to the outgoing conductors 131, 141, 146 and on the second side of the stator segments 120, 121 to the return conductors 132, 142, 147. In addition, phases U, V and W are each decoupled on the second side of stator segments 120, 121 from forward conductors 131, 141, 146 and on the first side of stator segments 120, 121 from return conductors 132, 142, 147.

In the case of the first stator segments 120, the first and the second side are each aligned parallel to the second direction 14. In the case of the second stator segments 121, the first and the second side are each aligned parallel to the first direction 12.

The first forward and return conductors 131, 132 of first stator segments 120 lying one above the other on a plurality of stator layers 104, 106 can each be connected in series. In particular, the first forward conductor 131 arranged in the first stator layer 104 and the first return conductor 132 arranged in the first stator layer 104 can be connected in series with the first forward conductor 131 arranged in the third stator layer 106 and the first return conductor 132 arranged in the third stator layer 106. Analogously, the second forward and return conductors 141, 142 and the third forward and return conductors 146, 147 of first stator segments 120 lying one above the other on several stator layers 104, 106 can each be connected in series.

In particular, the phases U, V, W can each be coupled on the first or the third stator layer 104, 106, into the outgoing conductors 131, 141, 146 of one of the first stator segments 120, then all outward associated with the relevant phase U, V, W - and return conductors 131, 141, 146, 132, 142, 147 on all stator layers 104, 106 of the relevant first stator segment 120 and finally brought together in a star point. Analogous to the first Stator segments 120 can also each have the first forward and return conductors 131, 132, the second forward and return conductors 141, 142 and the third forward and return conductors 146, 147 of second stator segments 121 superimposed on several stator layers 105, 107 connected in series and in one Be merged with the star point.

When the superimposed outgoing conductors 131, 141, 146 and / or the superimposed return conductors 132, 142, 147 and / or all of the forward and return conductors 131, 132, 141, 142, 146, 147 of the individual stator segments assigned to a phase U, V, W 120, 121 are each connected in series, ie in series, and / or the forward and return conductors 131, 132, 141, 142, 146, 147 of the individual stator segments 120, 121 are each connected to three-phase systems, the number of for the individual Stator sectors 120, 121 required connection points 154, 155, 156 are kept particularly small. In particular, the stator unit 100 can each have three connection points 154, 155, 156 per stator segment 120, 121.

Fig. 9 shows an equivalent circuit diagram of the first stator segments 120 of the first stator sector 110. In the case of FIG Fig. 9 The equivalent circuit shown are all superposed and series-connected conductor strips 125 of the first stator segments 120 shown as a single conductor. In particular, the first outgoing conductor 131 shown includes all outgoing conductors 131 of the first stator segments 120 that are superposed in different stator positions 104, 106 and connected in series, and the first return conductor 132 shown includes all of the first return conductors 132 of the first stator segments connected in series and superimposed in different stator positions 104, 106 120. Analogously, the illustrated second forward conductors 141, second return conductors 142, third forward conductors 146 and third return conductors 147 each include all second forward conductors 141, second return conductors, which are superposed in different stator layers 104, 106 and are connected in series 142, third forward conductor 146 and third return conductor 147 of the first stator segments 120.

The conductor strips 125 of the individual first stator segments 110 are each connected to form first three-phase systems 150. A first connection point 154 for feeding in the first phases U, a second connection point 155 for feeding in the second phases V and a third connection point 156 for feeding in the are located on a first side 152 of the individual first stator segments 120 oriented along the second direction 14 third phases W arranged. The first connection point 154 is connected to a first forward conductor 131 arranged in one of the stator layers 104, 106. The second connection point 155 is connected to a second forward conductor 141 arranged in one of the stator layers 104, 106. The third connection point 156 is connected to a third forward conductor 146 arranged in one of the stator layers 104, 106. In addition, a star point 157 is arranged on the first side 152 of the individual first stator segments 120. A first return conductor 132 of one of the stator layers 104, 106, a second return conductor 142 of one of the stator layers 104, 106 and a third return conductor 147 of one of the stator layers 104, 106 are connected to one another in each of the star points 157.

Fig. 10 FIG. 11 shows an equivalent circuit diagram of the second stator segments 121 of the first stator sector 110 Fig. 10 are the equivalent circuit diagram shown in the in Fig. 9 The equivalent circuit diagram of the first stator segments 120 shown, all superimposed and series-connected further conductor strips 126 of the second stator segments 121 shown as a single conductor.

The further conductor strips 126 of the second stator segments 121 are each connected in the same way as the conductor strips 125 of the first stator segments 120 to form second three-phase systems 151. On a first side 153 of the second stator segments oriented along the first direction 12 121 each have a first connection point 154 for feeding in the first phases U, a second connection point 155 for feeding in the second phases V and a third connection point 156 for feeding in the third phases W. The first connection point 154 is connected to a first forward conductor 131 arranged in one of the stator layers 105, 107. The second connection point 155 is connected to a second forward conductor 141 arranged in one of the stator layers 105, 107. The third connection point 156 is connected to a third forward conductor 146 arranged in one of the stator layers 105, 107. In addition, a star point 157 is arranged on the first side 153 of the individual second stator segments 121. In each of the star points 157, a first return conductor 132 of one of the stator layers 105, 107, a second return conductor 142 of one of the stator layers 105, 107 and a third return conductor 147 of one of the stator layers 105, 107 are connected to one another.

Fig. 11 shows an equivalent circuit diagram of the first stator sector 110 with the to Fig. 9 described and the first stator segments 120 representing first three-phase systems 150 and to Fig. 10 and the second three-phase systems 151 representing the second stator segments 121. The first three-phase systems 150 and the second three-phase systems 151 are arranged rotated by 90 ° with respect to one another. In particular, the first side 152 of the first stator segments 120 and the first side 153 of the second stator segments 121 are arranged perpendicular to one another.

Unless differences are described below, the equivalent circuit diagrams of the second stator sector 112, the third stator sector 113 and the fourth stator sector 114 each correspond to that in FIG Fig. 11 The equivalent circuit diagram of the first stator sector 110 shown here. In particular, the equivalent circuit diagram of the second stator sector 112 corresponds to the equivalent circuit diagram of the first stator sector 110 mirrored on the first side 152 of the first stator segments 120, the equivalent circuit diagram of the third stator sector 113 corresponds to the equivalent circuit diagram of the first stator sector 110 mirrored on the first side 153 of the second stator segments 121, and the equivalent circuit diagram of the fourth stator sector 114 corresponds to the equivalent circuit diagram of the first stator sector 110 rotated by 180 °.

Fig. 12 shows a plan view of the stator module 10 with the stator unit 100 and the stator sectors 110, 112, 113, 114. The first stator sector 110 has a first outer edge 161 oriented along the first direction 12 and a second outer edge 162 oriented along the second direction 14. The second stator sector 112 has a first outer edge 171 oriented along the first direction 12 and a second outer edge 172 oriented along the second direction 14. The third stator sector 113 has a first outer edge 181 oriented along the first direction 12 and a second outer edge 182 oriented along the second direction 14. The fourth stator sector 114 has a first outer edge 191 oriented along the first direction 12 and a second outer edge 192 oriented along the second direction 14.

The first stator sector 110 has a first inner edge 163 oriented along the second direction 14, which is arranged opposite the second outer edge 162 of the first stator sector 110, and a second inner edge 164 oriented along the first direction 12, that of the first outer edge 161 of the first stator sector 110 is arranged opposite on. The second stator sector 112 has a first inner edge 173 oriented along the second direction 14, which is arranged opposite the second outer edge 172 of the second stator sector 112, and a second inner edge 174 oriented along the first direction 12, which is the first outer edge 171 of the second stator sector 112 is arranged opposite on.

The third stator sector 113 has a first inner edge 183 oriented along the second direction 14, which is arranged opposite the second outer edge 182 of the third stator sector 113, and a second inner edge 184 oriented along the first direction 12, that of the first outer edge 181 of the third stator sector 113 is arranged opposite on. The fourth stator sector 114 has a first inner edge 193 oriented along the second direction 14, which is arranged opposite the second outer edge 192 of the fourth stator sector 114, and a second inner edge 194 oriented along the first direction 12, which is the first outer edge 191 of the fourth stator sector 114 is arranged opposite on.

The stator sectors 110, 112, 113, 114 end flush with the stator module 10 and the stator surface 11 on the outer sides. In particular, the first outer edge 161 of the first stator sector 110, oriented along the first direction 12, and the first outer edge 171 of the second stator sector 112, oriented along the first direction 12, are finally arranged with a first outer edge 41 of the stator surface 11 oriented along the first direction 12. The second outer edge 162 of the first stator sector 110 oriented along the second direction 14 and the second outer edge 182 of the third stator sector 113 oriented along the second direction 14 are finally arranged with a second outer edge 42 of the stator surface 11 oriented along the second direction 14. The first outer edge 181 of the third stator sector 113 oriented along the first direction 12 and the first outer edge 191 of the fourth stator sector 114 oriented along the first direction 12 are terminated with a third outer edge oriented along the first direction 12 and opposite the first outer edge 41 of the stator surface 11 43 of the stator surface 11 is arranged. The second outer edge 172 of the second stator sector 112, which is oriented along the second direction 14, and the second outer edge 192 of the fourth stator sector 114, which is oriented along the second direction 14, are final with a fourth outer edge 44 of the stator surface 11 oriented along the second direction 14 and opposite the second outer edge 42 of the stator surface 11.

In the interior of the stator unit 100, the stator sectors 110, 112, 113, 114 are arranged adjacent to one another. The first inner edge 163 of the first stator sector 110, which is oriented along the second direction 14, is arranged on the first inner edge 173 of the second stator sector 112, which is oriented along the second direction 14. The second inner edge 174 of the second stator sector 112, which is oriented along the first direction 12, is arranged on the second inner edge 194 of the fourth stator sector 114, which is oriented along the first direction 12. The first inner edge 183 of the third stator sector 113 oriented along the second direction 14 is arranged on the first inner edge 193 of the fourth stator sector 114 oriented along the second direction 14. The second inner edge 184 of the third stator sector 113, which is oriented along the first direction 12, is arranged on the second inner edge 164 of the first stator sector 110, which is oriented along the first direction 12.

In the stator module 10, the second inner edges 164, 174, 184, 194 of the stator sectors 110, 112, 113, 114 each lie on a first line oriented along the first direction 12 and the first inner edges 163, 173, 183, 193 lie along one the second line oriented towards the second direction 14. The first inner edges 163, 173 of the first and second stator sectors 110, 112 are arranged in alignment with the first inner edges 183, 193 of the third and fourth stator sectors 113, 114 on the second line. The second inner edges 164, 184 of the first and third stator sectors 110, 113 are aligned with the second inner edges 174, 194 of the second and fourth stator sectors 112, 114 on the first line.

The first line is perpendicular to the second line. The first line is in the second direction 14 in the middle of the Stator module 10 and the stator unit 100 between the first stator sector 110 and the third stator sector 113, and between the second stator sector 112 and the fourth stator sector 114. In particular, the first line is arranged centrally between the first and the third outer edge 41, 43 of the stator surface 11, the stator unit 100 and the stator module 10. The first line forms a first center line 117 of the stator surface 11, the stator unit 100 and the stator module 10, oriented along the first direction 12. The second line is in the first direction 12 in the middle of the stator module 10 and the stator unit 100 between the first stator sector 110 and the second stator sector 112, as well as between the third stator sector 113 and the fourth stator sector 114. In particular, the second line is arranged centrally between the second and fourth outer edges 42, 44 of the stator surface 11, the stator unit 100 and the stator module 10. The second line forms a second center line 118, oriented along the second direction 14, of the stator surface 11, the stator unit 100 and the stator module 10.

The second center line 118 can generally also be referred to as the center line of the stator unit 100 and the first center line 117 can also generally be referred to as the further center line of the stator unit 100.

The stator unit 100 has a first contact structure 421, a second contact structure 422, a third contact structure 423 and a fourth contact structure 424.

The first contact structure 421 can generally also be referred to as a contact structure of the stator unit 100. The fourth contact structure 424 can generally also be referred to as a further contact structure of the stator unit 100. The third contact structure 423 can generally also be referred to as an additional contact structure of the stator unit 100 become. The second contact structure 422 can generally also be referred to as a further additional contact structure of the stator unit 100.

The first contact structure 421 is arranged on an inner edge of the first stator sector 110 formed by the first inner edge 163 of the first stator sector 110 and on an inner edge of the second stator sector 112 formed by the first inner edge 173 of the second stator sector 112. The fourth contact structure 424 is arranged on a further inner edge of the first stator sector 110 formed by the second inner edge 164 of the first stator sector 110 and on an inner edge of the third stator sector 113 formed by the second inner edge 184 of the third stator sector 113. The third contact structure 423 is arranged on a further inner edge of the third stator sector 113 formed by the first inner edge 183 of the third stator sector 113 and on an inner edge of the fourth stator sector 114 formed by the first inner edge 193 of the fourth stator sector 114. The second contact structure 422 is arranged on a further inner edge of the second stator sector 112 formed by the second inner edge 174 of the second stator sector 112 and on a further inner edge of the fourth stator sector 114 formed by the second inner edge 194 of the fourth stator sector 114.

The first contact structure 421, the second contact structure 422, the third contact structure 423 and the fourth contact structure 424 each comprise a plurality of contact units 449. The contact units 449 are electrically conductively connected to the conductor strips 125, 126 of the stator unit 100 and are designed to direct the drive currents into the conductor strips 125, 126 to be fed. If the conductor strips 125, 126 of the stator sectors 110, 112, 113, 114 are each connected to form three-phase systems, the contact units 449 are designed in particular to feed the drive currents into the multiphase systems of the stator segments 120, 121. The stator unit 100 then has for each connection point 154, 155, 156 of the three-phase systems each have at least one, in particular two, contact units 449.

The first contact structure 421 comprises a first contact unit group 441 and a second contact unit group 442. The first contact unit group 441 is electrically conductively connected to the conductor strips 125 of the first stator sector 110 elongated along the first direction 12 and includes all contact units 449 that are connected to the ones along the first Direction 12 elongated conductor strips 125 of the first stator sector 110 are electrically conductively connected. The second contact unit group 442 is electrically conductively connected to the conductor strips 125 of the second stator sector 112, which are elongated along the first direction 12, and comprises all contact units 449, which are electrically conductively connected to the conductor strips 125 of the second stator sector 112, which are elongated along the first direction 12. In particular, the first contact structure 421 comprises all contact units 449 which are electrically conductively connected to the conductor strips 125 which are arranged in the first and second stator sectors 110, 112 in the first and third stator layers 104, 106.

The fourth contact structure 424 comprises a third contact unit group 443 and a fourth contact unit group 444. The third contact unit group 443 is electrically conductively connected to the further conductor strips 126 of the first stator sector 110 elongated along the second direction 14 and includes all contact units 449 which are connected to the along the second direction 14 elongated further conductor strips 126 of the first stator sector 110 are electrically conductively connected. The fourth contact unit group 444 is electrically conductively connected to the further conductor strips 126 of the third stator sector 113, which are elongated along the second direction 14, and comprises all contact units 449 which are connected to the further conductor strips which are elongated along the second direction 14 126 of the third stator sector 113 are electrically conductively connected. In particular, the fourth contact structure 424 comprises all contact units 449 which are electrically conductively connected to the further conductor strips 126 which are arranged in the first and third stator sectors 110, 113 in the second and fourth stator layers 105, 107.

The third contact structure 423 comprises a fifth contact unit group 445 and a sixth contact unit group 446. The fifth contact unit group 445 is electrically conductively connected to the conductor strips 125 of the third stator sector 113, which are elongated along the first direction 12, and includes all contact units 449 that are connected to the ones along the first Direction 12 elongated conductor strips 125 of the third stator sector 113 are electrically conductively connected. The sixth contact unit group 446 is electrically conductively connected to the conductor strips 125 of the fourth stator sector 114, which are elongated along the first direction 12, and comprises all contact units 449, which are electrically conductively connected to the conductor strips 125 of the fourth stator sector 114, which are elongated along the first direction 12. In particular, the third contact structure 423 comprises all contact units 449 which are electrically conductively connected to conductor strips 125 which are arranged in the third and fourth stator sectors 113, 114 in the first and third stator layers 104, 106.

The second contact structure 422 comprises a seventh contact unit group 447 and an eighth contact unit group 448. The seventh contact unit group 447 is electrically conductively connected to the further conductor strips 126 of the second stator sector 112, which are elongated along the second direction 14, and includes all contact units 449 which are connected to the along the second direction 14 elongated further conductor strips 126 of the second stator sector 112 are electrically conductively connected. The eighth contact unit group 448 is associated with those along the second direction 14 elongated further conductor strips 126 of the fourth stator sector 114 are electrically conductively connected and comprises all contact units 449 which are electrically conductively connected to the further conductor strips 126 of the fourth stator sector 114 elongated along the second direction 14. In particular, the second contact structure 422 comprises all contact units 449 which are electrically conductively connected to the further conductor strips 126 which are arranged in the second and fourth stator sectors 112, 114 in the second and fourth stator layers 105, 107.

The contact units 449 of all further conductor strips 126, which are elongated along the second direction 14, are thus arranged on the first line oriented along the first direction 12, in particular on the first center line 117. The contact units 449 of all conductor strips 125, which are elongated along the first direction 12, are arranged on the second line oriented along the second direction 14, in particular on the second center line 118.

Are the conductor strips 125, 126 of the first stator sector 110 according to FIG Fig. 11 interconnected to form three-phase systems, a comparison of the representations of the first stator sector 110 in FIG Fig. 12 and Fig. 11 that the connection points 154, 155, 156 of the first stator segments 120 of the first stator sector 110, which are arranged along the first side 152 of the first stator segments 120, are arranged on the first inner edge 163 of the first stator sector 110. In addition, the connection points 154, 155, 156 of the second stator segments 121 of the first stator sector 110, which are arranged along the first side 153 of the second stator segments 121, are arranged on the second inner edge 164 of the first stator sector 110. The star points 157 of the first stator segments 120 of the first stator sector 110 are on the first inner edge 163 of the first stator sector 110 and the star points 157 of the second stator segments 121 of the first stator sector 110 are on the second inner edge 164 of the first stator sector 110 arranged.

If the conductor strips 125, 126 of the second stator sector 112 are connected together to form three-phase systems analogously to the first stator sector 110, then the equivalent circuit diagram of the second stator sector 112 is different from that in FIG Fig. 11 The illustrated equivalent circuit diagram of the first stator sector 110 is mirrored on the first side 152 of the first stator segments 120. The first side 152 of the first stator segments 120 of the second stator sector 112 is then arranged along the first inner edge 173 of the second stator sector 112. In addition, the first side 153 of the second stator segments 121 of the second stator sector 112 is arranged along the second inner edge 174 of the second stator sector 112. The star points 157 of the first stator segments 120 of the second stator sector 112 are arranged on the first inner edge 173 of the second stator sector 112 and the star points 157 of the second stator segments 121 of the second stator sector 112 are arranged on the second inner edge 174 of the second stator sector 112.

If the conductor strips 125, 126 of the third stator sector 113 are connected together to form three-phase systems analogously to the first stator sector 110, then the equivalent circuit diagram of the third stator sector 113 is different from that in FIG Fig. 11 The illustrated equivalent circuit diagram of the first stator sector 110 is mirrored on the first side 153 of the second stator segments 121. The first side 152 of the first stator segments 120 of the third stator sector 113 is arranged along the first inner edge 183 of the third stator sector 113. In addition, the first side 153 of the second stator segments 121 of the third stator sector 113 is arranged along the second inner edge 184 of the third stator sector 113. The star points 157 of the first stator segments 120 of the third stator sector 113 are arranged on the first inner edge 183 of the third stator sector 113 and the star points 157 of the second stator segments 121 of the third stator sector 113 are arranged on the second inner edge 184 of the third stator sector 113.

If the conductor strips 125, 126 of the fourth stator sector 114 are connected together to form three-phase systems analogously to the first stator sector 110, then the equivalent circuit diagram of the fourth stator sector 114 is different from that in FIG Fig. 11 illustrated equivalent circuit diagram of the first stator sector 110 rotated by 180 °. The first side 152 of the first stator segments 120 of the fourth stator sector 114 is arranged along the first inner edge 193 of the fourth stator sector 114. In addition, the first side 153 of the second stator segments 121 of the fourth stator sector 114 is arranged along the second inner edge 194 of the fourth stator sector 114. The star points 157 of the first stator segments 120 of the fourth stator sector 114 are arranged on the first inner edge 193 of the fourth stator sector 114 and the star points 157 of the second stator segments 121 of the fourth stator sector 114 are arranged on the second inner edge 194 of the fourth stator sector 114.

Overall, the connection points 154, 155, 156 of the first stator segments 120 of the first, second, third and fourth stator sectors 110, 112, 113, 114 lie on the second center line 118. The connection points 154, 155, 156 of the second stator segments 121 of the first, The second, third and fourth stator sectors 110, 112, 113, 114 all lie on the first center line 117. When the conductor strips 125, 126 are interconnected to form three-phase systems with a common star point, the three free connections of the individual phases can each be connected to at least one of the, in particular with two of the contact units 449 of the contact unit groups 441, 442, 443, 444, 445, 446, 447, 448 are electrically conductively connected. If the stator sectors 110, 112, 113, 114 each comprise three three-phase systems arranged next to one another in the second direction 14 with six conductor strips 125 each and three three-phase systems arranged next to one another in the first direction 12 with six further conductor strips 126 each, then the stator sectors 110, 112, 113, 114 each have eighteen ports, each with at least eighteen, in particular thirty-six, contact units 449 of the contact structures 421, 422, 423, 444 can be connected. The first, second, third and fourth contact structures 421, 422, 423, 424 then each comprise at least eighteen, in particular thirty-six, contact units 449.

Instead of interconnecting the conductor strips 125, 126 of the individual stator sectors 110, 112, 113, 114 in each case to form multiphase systems, in alternative embodiments of the stator unit 100 (not shown), the conductor strips 125, 126 or superimposed and each serially connected conductor strips 125, 126 of several stator levels 104 , 105, 106, 107 can also be connected separately to their own connection points or contact units 449. In particular, each of the conductor strips 125, 126 can be connected individually and independently of all other conductor strips 125, 126 to one or two of the contact units 449 and can be supplied with an electrical drive current via the respective contact unit 449 or the respective contact units 449.

In the case of the stator unit 100, on the outer edges 41, 42, 43, 44 of the stator unit 100, on the outer edges 161, 162 of the first stator sector 110, on the outer edges 171, 172 of the second stator sector 112, on the outer edges 181, 182 of the third stator sector 113 and on the outer edges 191, 192 of the fourth stator sector 114 in each case no contact units 449 are arranged. The outer edges 41, 42, 43, 44 of the stator unit 100, the outer edges 161, 162 of the first stator sector 110, the outer edges 171, 172 of the second stator sector 112, the outer edges 181, 182 of the third stator sector 113 and the outer edges 191, 192 of the fourth Stator sector 114 are therefore all free of contact units 449. Therefore, outer regions of the stator unit 100 that are free of contact units 449 are arranged along the outer edges 161, 162, 171, 172, 181, 182, 191, 192 of the stator sectors 110, 112, 113, 114.

The contact units 449 are arranged exclusively on the inner edges 163, 164, 173, 174, 183, 184, 193, 194 of the stator sectors 110, 112, 113, 114. In particular, the outer edges 41, 42, 43, 44 of the stator unit 100, the outer edges 161, 162 of the first stator sector 110, the outer edges 171, 172 of the second stator sector 112, the outer edges 181, 182 of the third stator sector 113 and the outer edges 191, 192 of the fourth stator sector 114 are all free of connection points 154, 155, 156 of the stator segments 120, 121.

The first contact unit group 441 and the second contact unit group 442 of the first contact structure 421 can, as in FIG Fig. 12 shown, be arranged in a row next to one another along the second direction 14. In particular, the contact units 449 of the first contact unit group 441 and the contact units 449 of the second contact unit group 442 can be arranged in a row next to one another along the second direction 14. One contact unit 449 of the first contact unit group 441 can be arranged alternately next to a contact unit 449 of the second contact unit group 442 or alternately two contact units 449 of the first contact unit group 441 next to two contact units 449 of the second contact unit group 442.

In addition, as in Fig. 12 is shown, the fifth contact unit group 445 and the sixth contact unit group 446, in particular the contact units 449 of the fifth contact unit group 445 and the contact units 449 of the sixth contact unit group 446, be arranged in a row next to one another along the second direction 14. One contact unit 449 of the fifth contact unit group 445 can be arranged alternately next to a contact unit 449 of the sixth contact unit group 446 or alternately two contact units 449 of the fifth contact unit group 445 next to two contact units 449 of the sixth contact unit group 446.

Analogously, as in Fig. 12 is shown, the third contact unit group 443 and the fourth contact unit group 444, in particular the contact units 449 of the third contact unit group 443 and the contact units 449 of the fourth contact unit group 444, can be arranged in a row next to one another along the first direction 12. One contact unit 449 of the third contact unit group 443 can be arranged alternately next to a contact unit 449 of the fourth contact unit group 444 or alternately two contact units 449 of the third contact unit group 443 next to two contact units 449 of the fourth contact unit group 444.

Also, as in Fig. 12 is shown, the seventh contact unit group 447 and the eighth contact unit group 448, in particular the contact units 449 of the seventh contact unit group 447 and the contact units 449 of the eighth contact unit group 448, can be arranged in a row next to one another along the first direction 12. One contact unit 449 of the seventh contact unit group 447 can be arranged alternately next to a contact unit 449 of the eighth contact unit group 448 or alternately two contact units 449 of the seventh contact unit group 447 next to two contact units 449 of the eighth contact unit group 448.

The stator unit 100 has a center area 460 in the center of the stator unit 100 at a point of intersection 119 of the first and second center lines 117, 118. The first contact unit group 441, the second contact unit group 442, the third contact unit group 443, the fourth contact unit group 444, the fifth contact unit group 445, the sixth contact unit group 446, the seventh contact unit group 447 and the eighth contact unit group 448 are arranged outside the center area 460. In particular, the contact units 449 are Contact unit groups 441, 442, 443, 444, 445, 446, 447, 448 are arranged outside the central area 460.

The first contact structure 421, the second contact structure 422, the third contact structure 423 and the fourth contact structure 424 form a cross-shaped contact arrangement 420 of the stator unit 100 for contacting the conductor strips 125, 126 of the stator unit 100. The contact arrangement 420 is cross-shaped and in each case along the first center line 117 and the second center line 118 of the stator module 10 and the stator unit 100 aligned. The contact structure 420 thus lies on the boundaries of the stator sectors 110, 112, 113, 114 in the first and second directions 12, 14 inside the stator unit 100 and the stator module 10. In particular, they form on the first center line 117 and on the second center line 118 arranged connection points 154, 155, 156 of the first and second stator segments 120, 121, the contact structure 420 for contacting the stator segments 120, 121.

In Fig. 12 inner edges 163, 164, 173, 174, 183, 184, 193, 194 of the stator sectors 110, 112, 113, 114 and the contact structures 421, 422, 423, 424 of the contact arrangement 420 are respectively arranged on the first and second lines that the Center lines 117, 118 correspond. In alternative embodiments of the stator unit 100, the first and / or the second line cannot correspond to the first and / or the second center line 117, 118 either. In particular, the second inner edges 164, 174, 184, 194 of the stator sectors 110, 112, 113, 114 and the second and fourth contact structure 422, 424 of the contact arrangement 420 can be arranged on, in particular on one, parallel to the first direction 12 and in the second direction 14 be arranged from the first center line 117 in the direction of the first outer edge 41, or the third outer edge 43 shifted first line. Alternatively or additionally, the first inner edges 163, 173, 183, 193 of the stator sectors 110, 112, 113, 114 and the First and third contact structures 421, 423 of the contact arrangement 420 are arranged on a second line, in particular on a second line aligned parallel to the second direction 14 and displaced in the first direction 12 from the first center line 117 in the direction of the second outer edge 42 or the fourth outer edge 44 be.

In the case of the stator unit 100, no contact units 449 are arranged in the center region 460. In alternative embodiments of the stator unit 100, however, one or more of the contact units 449 of the contact arrangement 420 can also be arranged in the center region 460.

Fig. 13 shows a plan view of a first further stator unit 700. Unless differences are described below, the first further stator unit 700 is designed like the stator unit 100.

In the first further stator unit 700, the contact units 449 of the first contact unit group 441 and the contact units 449 of the second contact unit group 442 are arranged distributed over the entire length of the first inner edge 163 of the first stator sector 110 and over the entire length of the first inner edge 173 of the second stator sector 112. Likewise, the contact units 449 of the third contact unit group 443 and the contact units 449 of the fourth contact unit group 444 are arranged distributed over the entire length of the second inner edge 164 of the first stator sector 110 and over the entire length of the second inner edge 184 of the third stator sector 113. The contact units 449 of the fifth contact unit group 445 and the contact units 449 of the sixth contact unit group 446 are arranged distributed over the entire length of the first inner edge 183 of the third stator sector 113 and over the entire length of the first inner edge 193 of the fourth stator sector 114. The contact units 449 of the seventh contact unit group 447 and the contact units 449 of the eighth contact unit group 448 are over the entire length of the second Inner edge 174 of the second stator sector 112 and arranged distributed over the entire length of the second inner edge 194 of the fourth stator sector 114. In particular, in the case of the further stator unit 700, some of the contact units 449 are arranged in the center region 460 of the further stator unit 700.

At the in Fig. 12 shown stator unit 100 and in the in Fig. 13 The first further stator unit 700 shown are the contact unit groups 441, 442, 443, 444, 445, 446, 447, 448, in particular the contact units 449 of the contact unit groups 441, 442, 443, 444, 445, 446, 447, 448, each in rows of the first and second center lines 117, 118 of the stator unit 100. In alternative embodiments of the stator unit 100, the contact unit groups 441, 442, 443, 444, 445, 446, 447, 448 or the contact units 449 can also be wholly or partially next to the center lines 117, 118 on the inner edges 163, 164, 173, 174, 183 , 184, 193, 194 of the stator sectors 110, 112, 113, 114.

Fig. 14 shows a plan view of a second further stator unit 702. Unless differences are described below, the second further stator unit 702 is designed like the stator unit 100. In particular, in the second further stator unit 702, the first contact structure 421 is on the first inner edge 163 of the first stator sector 110 and arranged on the first inner edge 173 of the second stator sector 112. The fourth contact structure 424 is on the second inner edge 164 of the first stator sector 110 and on the second inner edge 184 of the third stator sector 113, the third contact structure 423 is on the first inner edge 183 of the third stator sector 113 and on the first inner edge 193 of the fourth stator sector 114 and the second contact structure 422 is arranged on the second inner edge 174 of the second stator sector 112 and on the second inner edge 194 of the fourth stator sector 114.

In the second further stator unit 702, the contact units 449 of the contact structures 421, 422, 423, 424 are each arranged next to the inner edges 163, 164, 173, 174, 183, 184, 193, 194 of the stator sectors 110, 112, 113, 114. In particular, the contact units 449 of the first contact unit group 441 are arranged offset in the direction of the first stator sector 110 on the first inner edges 163, 174 of the first and second stator sectors 110, 112. The contact units 449 of the second contact unit group 442 are arranged offset in the direction of the second stator sector 112 on the first inner edges 163, 173 of the first and second stator sectors 110, 112. The contact units 449 of the third contact unit group 443 are offset in the direction of the first stator sector 110 on the second inner edges 164, 184 of the first and third stator sectors 110, 113 and the contact units 449 of the fourth contact unit group 444 are offset in the direction of the third stator sector 113 on the second Inner edges 164, 184 of the first and third stator sectors 110, 113 are arranged.

In addition, the contact units 449 of the fifth contact unit group 445 are offset in the direction of the third stator sector 113 on the first inner edges 183, 193 of the third and fourth stator sectors 113, 114 and the contact units 449 of the sixth contact unit group 446 are offset in the direction of the fourth stator sector 114 on the first inner edges 183, 193 of the third and fourth stator sectors 113, 114 arranged. The contact units 449 of the seventh contact unit group 447 are offset in the direction of the second stator sector 112 on the second inner edges 174, 194 of the second and fourth stator sectors 112, 114 and the contact units 449 of the eighth contact unit group 448 are offset in the direction of the fourth stator sector 114 on the second Inner edges 174, 194 of the second and fourth stator sectors 112, 114 are arranged.

The stator unit 100, the further stator unit 700 and / or the second further stator unit 702 can be designed as a multi-layer unit, the stator layers 104, 105, 106, 107 with the conductor strips 125, 126 each being connected to one another via insulating intermediate layers. For example, the stator unit 100, the further stator unit 700 and / or the second further stator unit 702 can be embodied as a printed circuit or printed circuit board, also called a printed circuit board (PCB). In particular, the stator unit 100, the further stator unit 700 and / or the second further stator unit 702 can be designed as a multi-layer circuit board, the stator layers 104, 105, 106, 107 each being arranged in different layers of the circuit board. The conductor strips 125, 126 can have a thickness between 10 μm and 500 μm on the layers of the circuit board, in particular the conductor strips 125, 126 can have a thickness between 50 μm and 250 μm. The contact units 449 can each be designed as contact holes or vias (vertical interconnect access) in the stator unit 100, the further stator unit 700 and / or the second further stator unit 702 and conductively coated passage openings through the stator unit 100, the further stator unit 700 and / or the second further stator unit 702.

In order to interconnect the forward and return conductors 131, 141, 146, 132, 142, 147 of the three-phase systems 150, 151 of the stator segments 120, 121 in accordance with the method shown in FIGS Figures 9 , 10 and 11 To achieve the equivalent circuit diagrams shown, the stator unit 100, the further stator unit 700 and / or the second further stator unit 702 can each have connection structures. The connection structures can be arranged on the conductor strips 125, 126 or between the conductor strips 125, 127 of the stator unit 100, the further stator unit 700 and / or the second further stator unit 702.

Some of the connection structures can be designed as horizontal connection structures, which conductor strips 125, 126, which are arranged in the individual stator segments 120, 121 within the same stator layer 104, 105, 106, 107, connect to one another. The horizontal connection structures are arranged on the same stator layer 104, 105, 106, 107 as the conductor strips 125, 126 to be connected. The horizontal connection structures can run in the stator layers 104, 105, 106, 107 in the direction 12, 14 in which the conductor strips 125, 126 are arranged side by side. In the stator layers 104, 106, in which the conductor strips 125 are extended along the first direction 12 and arranged next to one another along the second direction 14, the horizontal connection structures can run along the second direction 14. In the stator layers 105, 107, in which the further conductor strips 126 elongated along the second direction 14 are arranged, the horizontal connection structures can run along the first direction 12. The horizontal connection structures, like the conductor strips 125, 126, can be designed as conductor tracks or conductor track sections of a layer of a circuit board of the stator unit 100, the further stator unit 700 and / or the second further stator unit 702.

Some of the connection structures can be designed as vertical connection structures, which interconnect conductor strips 125, 126, which are arranged in the individual stator segments 120, 121 in different stator layers 104, 105, 106, 107. For example, the first forward and return conductors 131, 132 for the first phases U of the drive currents can be connected in series via the vertical connection structures. Likewise, the second forward and return conductors 141, 142 for the second phases V of the drive currents and the third forward and return conductors 146, 147 for the third phases W of the drive currents can be connected in series via the vertical connection structures. The vertical connection structures can be as plated-through holes or as vias (vertical interconnect access), ie as contact holes, between the individual stator layers 104, 105, 106, 107 the printed circuit board of the stator unit 100, the further stator unit 700 and / or the second further stator unit 702.

The schematic representations of the preceding figures show the conductor strips 125, 126 each as rectangular conductor structures extending over the entire stator sectors 110, 112, 113, 114. The conductor strips 125, 126 can be formed in regions of the stator unit 100, the further stator unit 700 and / or the second further stator unit 702 remote from the connection structures, as is shown schematically in the preceding figures. In particular in the area of the connection structures, however, the shape of the conductor strips 125, 126 can also deviate from the schematic representations of the preceding figures. In particular, the conductor strips 125 of the first stator segments 120 can be made narrower in the area of the connection structures in the second direction 14 than in the areas remote from the connection structures. Likewise, the further conductor strips 126 of the second stator segments 121 can be made narrower in the area of the connection structures in the first direction 12 than in the areas remote from the connection structures.

The conductor strips 125 of the first stator segments 120 can also be made shorter in the first direction 12 than is shown schematically in the preceding figures. The further conductor strips 126 of the second stator segments 121 can also be made shorter in the second direction 14 than is shown schematically in the preceding figures. In particular, the conductor strips 125 of the individual first stator segments 120 do not have to extend completely over the first stator segments 120 in the first direction 12 and the further conductor strips 126 of the individual second stator segments 121 do not have to extend completely over the second stator segments 121 in the first direction 12 extend.

Instead, in the area of the outer edges 161, 162, 171, 172, 181, 182, 191, 192 and the inner edges 163, 164, 173, 174, 183, 184, 193, 194 of the stator sectors 110, 112, 113, 114 horizontal connection structures and / or vertical connection structures can be arranged.

An electrically conductive connection between the contact units 449 of the contact arrangement 420 and the conductor strips 125, 126 can be made in any stator layer 104, 105, 106, 107 of the stator unit 100, the further stator unit 700 and / or the second further stator unit 702. In particular, there can be an electrically conductive connection between one of the contact units 449 and one of the conductor strips 125, 126 in stator layers 105, 106 which are arranged in the vertical direction 15 in the interior of the stator unit 100, the further stator unit 700 and / or the second further stator unit 702 are. The stator layers 105, 106 arranged inside the stator unit 100, the further stator unit 700 and / or the second further stator unit 702 form inner layers of the stator unit 100, the further stator unit 700 and / or the second further stator unit 702, while those on the stator surface 11 and on a bottom surface of the stator unit 100, the further stator unit 700 and / or the second further stator unit 702 arranged stator layers 104, 107 outer layers of the stator unit 100, the further stator unit 700 and / or the second further stator unit 702. The inner layers are thus arranged between the outer layers. At the in Fig. 5 The stator unit 100 shown here form the first stator layer 104 and the fourth stator layer 107 each outer layers and the second stator layer 105 and the third stator layer 106 each form the inner layers of the stator unit 100. Stator layers 104, 105, 106, 107 with one conductor strip 125, 126 or with several conductor strips 125 , 126, which are electrically conductively connected to contact units 449 of the contact arrangement 420, can also be referred to as connection stator layers.

Fig. 15 shows a schematic representation of a plan view of a connection stator layer 109 of the stator unit 100. In the connection stator layer 109, the first stator segments 120 are connected to the contact arrangement 420 with the conductor strips 125 elongated along the first direction 12. The connection stator layer 109 can be, for example, that stator layer 104, 106 with conductor strips 125 extended in the first direction 12, which is arranged farthest away from the stator surface 11 in the vertical direction 15. For example, the connection stator layer 109 can be formed by the third stator layer 106.

The following describes the connection of the conductor strips 125 to the contact arrangement 420 based on the connection of the conductor strips 125 of the first and second stator sectors 110, 112 to the first and second contact unit groups 441, 442 of the first contact structure 421. The conductor strips 125 of the third and fourth stator sectors 113, 114 are connected in an analogous manner to the fifth and sixth contact unit groups 445, 446 of the third contact structure 423.

The first contact structure 421 comprises two first contact units 471, two second contact units 472, two third contact units 473, two fourth contact units 474, two fifth contact units 475, two sixth contact units 476, two seventh contact units 477, two eighth contact units 478, two ninth contact units 479, two tenth contact units 480, two eleventh contact units 481, two twelfth contact units 482, two thirteenth contact units 483, two fourteenth contact units 484, two fifteenth contact units 485, two sixteenth contact units 486, two seventeenth contact units 487 and two eighteenth contact units 488, which appear in sequence of the second center line 118 are arranged between the first stator sector 110 and the second stator sector 112.

The conductor strips 125 of the first stator sector 110 are connected to the first contact unit group 441, the first contact unit group 441 having the first contact units 471, the third contact units 473, the fifth contact units 475, the seventh contact units 477, the ninth contact units 479, the eleventh contact units 481, the thirteenth contact units 483, the fifteenth contact units 485, and the seventeenth contact units 487. The conductor strips 125 of the connection stator layer 109 of the second stator sector 112 are connected to the second contact unit group 442, the second contact unit group 442 the second contact units 472, the fourth contact units 474, the sixth contact units 476, the eighth contact units 478, the tenth contact units 480, the twelfth Contact units 482, the fourteenth contact units 484, the sixteenth contact units 486 and the eighteenth contact units 488.

The outgoing conductors 131, 141, 146 of the three-phase systems of the first stator segments 120 of the first stator sector 110 are each electrically conductively connected to the contact units 471, 473, 475, 477, 479, 481, 483, 485, 487 of the first contact unit group 441. The outgoing conductors 131, 141, 146 of the three-phase systems of the first stator segments 120 of the second stator sector 112 are each electrically conductively connected to the contact units 472, 474, 476, 478, 480, 482, 484, 486, 488 of the second contact unit group 442.

The stator unit 100 has a central conductor strip 127. The central conductor strip 127 is arranged offset in the second direction 14 with respect to the first contact structure 421 in the direction of the intersection 119 of the center lines 117, 118 that it is arranged in the second direction 14 at a distance from the contact units 449 of the first contact structure 421. In particular, the conductor strip 127 close to the center adjoins the second center line 118 in the center region 460. In the case of the stator unit 100 the third outward conductor 146 of a stator segment 122 of the first stator sector 110 near the center and arranged on the first center line 117 forms the conductor strip 127 near the center. In alternative embodiments of the stator unit 100 not shown, the conductor strip 127 near the center can also be connected to the first by other outgoing conductors 131, 141, 146 Center line 117 of stator segments arranged close to the center of the first or second stator sector 110, 112 are formed.

Except for the central conductor strip 127, all outgoing conductors 131, 141, 146 of the first and second stator sectors 110, 112 are connected to the contact units 471, 472, 473, 474, 475, 476, 477, 478, 479, via horizontal connection structures arranged on the connection stator layer 109, 480, 481, 482, 483, 484, 485, 486, 488 of the first contact structure 421 are electrically conductively connected. The central conductor strip 127 is connected to the two seventh contact units 487 of the first contact unit group 441 via a vertical connection structure 602 and via an in Fig. 15 lead not shown electrically connected. The supply line is arranged in an additional stator layer of the stator unit 100 and is electrically conductively connected on the additional stator layer to the vertical connection structure 602 and the seventh contact units 487 of the first contact structure 421.

The conductor strip 127 close to the center is in turn connected in an electrically conductive manner to the vertical connection structure 602 via a horizontal connection structure 601 arranged on the connection stator layer 109. The additional stator layer is formed by a stator layer arranged in the vertical direction 15 above or below the connection stator layer 109. In particular, the additional stator layer can be formed by the stator layer 104, 106 with conductor strips 125 which extend in the first direction 12 and which follow the connection stator layer 109 in the vertical direction 15, for example by the first stator layer 104 or by a A further stator layer, arranged between the first stator layer 104 and the third stator layer 106, with conductor strips 125 extending in the first direction 12.

Connecting the conductor strip 127 close to the center via the vertical connection structure 602 and the supply line arranged in the additional stator layer makes it possible to connect the conductor strip 127 close to the center to the first contact structure 421 in a space-saving manner. Especially in the case of stator units, where, as in the case of the in Fig. 12 shown stator unit 100, in the center area 460 there are no contact units 449, there is sufficient space available in the case of a connection between the conductor strip 127 close to the center and the seventeenth contact unit 487, which is implemented via the supply line arranged in the additional stator layer, to connect the remaining conductor strips 125 of the first and to connect the third stator sector 110, 112 to the first contact structure 421.

In the stator unit 100, the entire conductor arrangement of the third stator sector 113 corresponds to the entire conductor arrangement of the first stator sector 110 mirrored on the first center line 117. The entire conductor arrangement of the fourth stator sector 114 corresponds to the entire conductor arrangement of the second stator sector 112 mirrored on the first center line 117 Conductor arrangements include in particular the arrangement of the conductor strips 125, the horizontal connection structures 601 and the vertical connection structures 602 and the first and third contact structures 421, 423.In particular, in the connection stator layer 109, the entire conductor arrangement of the third stator sector 113 corresponds to the entire conductor arrangement of the mirrored on the first center line 117 first stator sector 110 and the entire conductor arrangement of the fourth stator sector 114 of the entire conductor arrangement of the second stator sector 112 mirrored at the first center line 117. In particular, au ch at the third contact structure 423 a central conductor strip 127 of the third stator sector 114 over a vertical connection structure 602 and a lead arranged in the additional stator layer are electrically conductively connected to contact units of the fifth contact unit group 445.

The further conductor strips 126 extended along the second direction 14 are connected in an analogous manner to the second contact structure 422 and the fourth contact structure 424 in an electrically conductive manner. In particular, the stator sectors 110, 112, 113, 114 in a further connection stator position of the stator unit 100 have a conductor arrangement that corresponds to the conductor arrangement of the conductor arrangement in FIG Fig. 15 Connection stator layer 109 shown corresponds. The further connection stator layer can be the fourth stator layer 107, for example. Like the connection stator layer 109, the further connection stator layer also comprises two further conductor strips close to the center, each of which is electrically conductively connected to one or more contact units 449 of the second or fourth contact structure 422, 424 via a further vertical connection structure 603 and a feed line arranged in a further additional stator layer. The further conductor strips close to the center of the further connection stator layer can be arranged in the third and fourth stator sectors 113, 114. The further additional stator layer can be, for example, the second stator layer 105 or a further stator layer arranged between the second stator layer 105 and the fourth stator layer 107 with further conductor strips 126 extending in the second direction 14.

The contact units 471, 472, 473, 474, 475, 476, 477, 478, 479, 480, 481, 482, 483, 484, 485, 486, 487, 488 can each be designed as vias in a stator unit 100 designed as a printed circuit board . The vertical connection structures 602 and / or the further vertical connection structures 603 can likewise be embodied as vias. The vertical connection structures 602 are each arranged on the second center line 118, with those on the near-center The vertical connection structure 602 connected to the conductor strip 127 of the first stator sector 110 is arranged between the first and the second stator sector 110, 112 and the vertical connection structure 602 connected to the conductor strip 127 of the third stator sector 113 close to the center is arranged between the third and the fourth stator sector 113, 114. The further vertical connection structures 603 are each arranged on the first center line 117, the further vertical connection structure 603 connected to the further central conductor strips of the fourth stator sector 114 between the second and fourth stator sectors 112, 114 and those connected to the further central conductor strips of the third stator sector 113 further vertical connection structure 603 is arranged between the first and the third stator sector 111, 113. The vertical connection structures 602 and / or the further vertical connection structures 603 are each arranged in the central region 460. The vertical connection structures 602 and / or the further vertical connection structures 603 can each include a via arranged on the center lines 117, 118 or a plurality of vias arranged next to one another on the center lines 117, 118, in particular seven vias each arranged on the center lines 117, 118.

The stator unit 100, the first further stator unit 700 or the second further stator unit 702 are electrically conductively connected to a power module via the contact arrangement 420. The power module is designed to provide the drive currents required for driving the rotor 200. The power module can for example comprise one or more power generation units in order to generate the drive currents. The power generation units can be designed, for example, as amplifiers or output stages, in particular as H-bridge circuits. Alternatively, the drive currents can also be generated by further modules of the stator module 10 and fed into the power module. The power module can also be referred to as a feed module.

Fig. 16 shows a schematic perspective illustration of an underside of the power module 300. The underside of the power module 300 is essentially flat. On the bottom, in Fig. 16 Electronic components or components (not shown), in particular the power generation units, can be arranged on the power module 300. The power module 300 is designed as a plate. An extension of the power module 300 in the first and second directions 12, 14 is in each case greater than an extension of the power module 300 in the vertical direction 15. The power module 300 can comprise a printed circuit board with electronic parts or components arranged on the printed circuit board.

The circuit board of the power module 300 can have one or more copper layers in which conductor tracks for contacting the electronic components arranged on the circuit board are formed. The copper layers can have a thickness of 10 pm to 500 pm, in particular of 50 pm to 100 pm, in particular of 70 pm. The conductor tracks can have a minimum width of 50 μm or 100 μm, in particular 200 μm or 300 μm.

The power module 300 is designed in the shape of a cross in the plane spanned by the first and second directions 12, 14 with two bars 301, 302 oriented perpendicular to one another and aligned along the first and second directions 12, 14. The bars 301, 302 of the power module 300 each have the same dimensions in the first direction 12 and in the second direction 14. In particular, the power module 300 comprises a first bar 301 running along the first direction 12 and a second bar 302 running along the second direction 14.

The first beam 301 can have a width in the second direction 14 which is smaller than a width of the previously described stator unit 100 in the second direction 14.

In particular, the first beam 301 can have a width in the second direction 14 that is smaller than half the width of the stator unit 100 in the second direction 14. The second beam 302 can have a width in the first direction 12 that is smaller than a width of the stator unit 100 in the first direction 12. In particular, the second beam 302 in the first direction 12 can have a width that is smaller than half the width of the stator unit 100 in the first direction 12.

The power module 300 comprises a first module unit 320, a second module unit 322, a third module unit 324 and a fourth module unit 326, which are each designed to be mechanically separate from one another. Unless differences are described below, the modular units 320, 322, 324, 326 are of identical design. The first and third module units 320, 324 form the second bar 302 of the cross-shaped power module 300, which is aligned along the second direction 14, and the second and fourth module units 322, 326 form the first bar 301 of the cross-shaped power module 300, which is aligned along the first direction 12.

The first module unit 320 can generally also be referred to as a module unit 320 of the power module 300 and the fourth module unit 326 can generally also be referred to as a further module unit 326 of the power module 300.

In the plane spanned by the first and second directions 12, 14, the module units 320, 322, 324, 326 each have a part that is rectangular when viewed from above on the underside of the module units 320, 322, 324, 326. The base of a triangular part adjoins one side of the rectangular part, which in the plan view of the underside of the module units 320, 322, 324, 326 essentially has the shape of an isosceles triangle. The modular units 320, 322, 324, 326 are arranged in a cross shape around a common center point, the Tips of the triangular parts of the module units 320, 322, 324, 326 are arranged facing each other at the center point. The first module unit 320 and the third module unit 324 are arranged opposite one another in the second direction 14, the tips of the triangular parts of the first and third module units 320, 324 being arranged facing one another at the midpoint. The second module unit 322 and the fourth module unit 326 are arranged opposite one another in the first direction 12, the tips of the parts of the second and fourth module units 322, 326 designed as isosceles triangles each facing one another at the center point.

One leg of the triangular part of the second module unit 322 is arranged next to one leg of the triangular part of the first module unit 320. Another leg of the triangular part of the second module unit 322 is arranged next to a leg of the triangular part of the third module unit 324. One leg of the triangular part of the fourth module unit 326 is arranged next to a further leg of the triangular part of the first module unit 320. Another leg of the triangular part of the fourth module unit 326 is arranged next to another leg of the triangular part of the third module unit 324.

The module units 320, 322, 324, 326 are connected to one another in an electrically conductive manner via connection means 321, 323, 325, 327. In addition, the connection means 321, 323, 325, 327 can be designed to mechanically fasten the module units 320, 322, 324, 326 to one another. A first connector 321 connects the first module unit 320 to the second module unit 322, a second connector 323 connects the second module 322 to the third module unit 324, a third connector 325 connects the third module unit 324 to the fourth module unit 326 and a fourth connector 327 connects the fourth Module unit 326 with the first module unit 320. In alternative, not shown embodiments, the power module 300 can be cross-shaped, but in one piece from a single connected plate and without the module units 320, 322, 324, 326 and connecting means 321, 323, 325, 327 .

The connection means 321, 323, 325, 327 are each arranged on the legs of the triangular parts of the module units 320, 322, 324, 326. The connection means 321, 323, 325, 327 respectively connect legs of adjacent module units 320, 322, 324, 326 that are arranged next to one another.

The connection means 321, 323, 325, 327 can be designed as electrical plug connectors, for example as a printed circuit board connector. The connection means 321, 323, 325, 327 can in particular also be designed as press-fit circuit board connectors. The connection means 321, 323, 325, 327 can, for example, be pressed into contact holes formed in the module units 320, 322, 324, 326 on the underside of the module units 320, 322, 324, 326. In particular, the connection means 321, 323, 325, 327 can form a solder-free, electrically conductive connection between the module units 320, 322, 324, 326.

The modular units 320, 322, 324, 326 can each be of identical design, with the exception of a coupling element 1127 arranged on the first modular unit 320. In particular, the module units 320, 322, 324, 326 can each have identical dimensions and / or an identical conductor track layout, ie an identical conductor arrangement, and / or, apart from the coupling element 1127, be equipped identically with electronic components. In particular, a conductor arrangement of the first module unit 320, a conductor arrangement of the second module unit 322, a conductor arrangement of the third module unit 324 and a conductor arrangement of the fourth module unit 326 can each be embodied identically. In particular, all modular units 320, 322, 324, 326 have connection contacts, for example solder contacts, for connecting the coupling element 1127, only the first module unit 320 being equipped with the coupling element 1127. In alternative embodiments of the power module 300, the coupling element 1127 can also be arranged on one of the other module units 322, 324, 326 instead of on the first module unit 320. The power module 300 can be designed to receive a supply energy for generating the drive currents for the conductor strips 125, 126 of the stator unit 100 via the coupling element 1127.

Fig. 17 shows a schematic perspective illustration of the underside of the stator unit 100. The bottom surface 101 of the stator unit 100 opposite the stator surface 11 is flat. The further conductor strips 126 of the fourth stator layer 107 are arranged on the bottom surface 101. The underside of the stator unit 100 can be free of electronic parts or components. The cross-shaped contact arrangement 420 can be contacted from the underside of the stator unit 100. For example, the contact units 449, in particular contact holes or vias, of the contact arrangement 420 can be exposed on the underside of the stator unit 100.

In the case of the stator module 10, the stator unit 100 and the power module 300 are connected to one another in an electrically conductive manner via a connecting line 310. The connecting line 310 leads from the top of the power module 300 to the bottom and the bottom surface 101 of the stator unit 100.

The contact arrangement 420 of the stator unit 100 is connected to an in Fig. 16 shown connection arrangement 309 of the power module 300 electrically conductively connected. The connection arrangement 309 of the power module 300 can, like the contact arrangement 420 of the stator unit 100, be formed in a cross shape. The connection arrangement 309 of the power module 300 can comprise, for example, conductively coated through openings or conductively coated contact holes or vias. The contact holes of the connection arrangement 309 of the power module 300 can be designed like the contact holes of the contact arrangement 420 of the stator unit 100. The contact holes of the connection arrangement 309 of the power module 300 can be arranged directly below the contact holes of the contact arrangement 420 of the stator unit 100 and to the contact holes of the contact arrangement 420 of the stator unit 100 be aligned so that each contact hole in the stator unit 100 is opposite a contact hole aligned with the relevant contact hole in the stator unit 100 in the stator module 300 and vice versa.

As in Fig. 16 As shown, the cross-shaped connection arrangement 309 of the power module 300 is arranged along the center lines of the power module 300 running in the first direction 12 and the second direction 14. In particular, the cross-shaped connection arrangement 309 of the power module 300 is arranged centrally on the bars 301, 302 of the cross-shaped power module 300. In particular, the power module 300 comprises a first connection arrangement 311, which is arranged in the first direction 12 centrally on the second bar 302 of the power module 300 aligned along the second direction 14, a second connection arrangement 312, which is arranged in the second direction 14 in the middle on the along the First direction 12 aligned first bar 301 of the power module 300 is arranged, a third connection arrangement 313, which is arranged in the first direction 12 centrally on the second bar 302 of the power module 300 aligned along the second direction 14 and opposite the first connection arrangement 311, and a fourth connection arrangement 314, which in the second direction 14 is centered on the first beam 301 of the power module 300 and aligned along the first direction 12 the second connection arrangement 312 is arranged opposite one another.

The first connection arrangement 311 can generally also be referred to as the connection arrangement 311 of the power module 300 and the fourth connection arrangement 314 can generally also be referred to as a further connection arrangement 314 of the power module 300.

In the modular power module 300, the first connection arrangement 311 is arranged on the first module unit 320, the second connection arrangement 312 on the second module unit 322, the third connection arrangement 313 on the third module unit 324 and the fourth connection arrangement 314 on the fourth module unit 326 of the power module 300 . The connection arrangements 311, 312, 313, 314 are each arranged centrally on the module units 320, 322, 324, 326, in particular centrally on the rectangular parts of the module units 320, 322, 324, 326.

In the stator module 10, the first connection arrangement 311 of the power module 300 is below the first contact structure 421 of the stator unit 100, the second connection arrangement 312 of the power module 300 is below the second contact structure 422 of the stator unit 100, the third connection arrangement 313 of the power module 300 is below the third contact structure 423 of FIG Stator unit 100 and the fourth connection arrangement 314 of the power module 300 are arranged below the fourth contact structure 424 of the stator unit 100. The connection arrangements 311, 312, 313, 314 of the power module 300 are aligned parallel to the respective overlying contact structure 421, 422, 423, 424 of the stator unit 100.

The connecting line 310 is designed in the shape of a cross. The connecting line 310 comprises an in Fig. 17 shown contact means 319, via which the connection arrangement 309 of the Power module 300 is electrically conductively connected to the contact arrangement 420 of the stator unit 100. The contact means 319 can, as in FIG Fig. 17 is shown, a first contact means 315, which electrically conductively connects the first connection arrangement 311 of the power module 300 with the first contact structure 421, in particular with the first contact unit group 441 and the second contact unit group 442 of the stator unit 100, a second contact means 316, which the second connection arrangement 312 of the power module 300 with the second contact structure 422, in particular with the seventh contact unit group 447 and with the eighth contact unit group 448 of the stator unit 100, electrically conductively connects a third contact means 317, which the third connection arrangement 313 of the power module 300 with the third contact structure 423, in particular with the fifth contact unit group 445 and the sixth contact unit group 446 of the stator unit 100, electrically conductively connects, and a fourth contact means 318, which the fourth connection arrangement 314 of the power module 300 with the fourth contact structure 424, in particular with the third contact unit group 443 and the fourth contact unit group 444 of the stator unit 100, electrically conductively connected.

The connecting line 310 can comprise one or more pin strips arranged in a cross shape. In particular, the contact means 315, 316, 317, 318, as shown in FIG Fig. 17 is shown, each comprise one or more pin headers. The pin headers comprise electrically conductive pins which are arranged next to one another and which can be designed as straight, round cylinders. The pins are arranged engaging in the contact holes of the connection arrangement 309 of the power module 300 and in the opposite contact holes of the contact arrangement 420 of the stator unit 100 in order to establish an electrically conductive connection between the contact structures 421, 422, 423, 424 and the connection arrangements 311, 312, 313, 314 to manufacture. The contact means 315, 316, 317, 318 comprising pin strips can in particular be used as Press-in connectors, that is to say press-fit connectors, which are pressed into the contact holes in the stator unit 100 and / or into the contact holes in the power module 300.

In particular, each module unit 320, 322, 324, 326 of the power module 300 can be electrically conductively connected to exactly one of the contact structures 421, 422, 423, 424 of the stator unit 100 via exactly one of the contact means 315, 316, 317, 318. The first module unit 320 is connected to the first contact structure 421 of the stator unit 100 via the first contact means 315, the second module unit 322 is connected to the second contact structure 422 of the stator unit 100 via the second contact means 316, the third module unit 324 is connected to the third contact means 317 The third contact structure 423 of the stator unit 100 and the fourth module unit 326 are connected to the fourth contact structure 424 of the stator unit 100 via the fourth contact means 318.

The first module unit 320 is connected in an electrically conductive manner via the first contact means 315 of the connecting line 310 to the conductor strips 125 of the first and second stator sectors 110, 112 oriented along the first direction 12. The second module unit 322 is electrically conductively connected via the second contact means 316 of the connecting line 310 to the further conductor strips 126 of the second and fourth stator sectors 112, 114 oriented along the second direction 14. The third module unit 324 is electrically conductively connected via the third contact means 317 of the connecting line 310 to the conductor strips 125 of the third and fourth stator sectors 113, 114, which are oriented along the first direction 12. The fourth module unit 326 is electrically conductively connected via the fourth contact means 318 of the connecting line 310 to the further conductor strips 126 of the first and third stator sectors 110, 113 oriented along the second direction 14.

If the contact means 319 for connecting the contact structures 421, 422, 423, 424 of the stator unit 100 to the connection arrangements 311, 312, 313, 314 are designed as press-fit connectors, the contact structures 421, 422, 423, 424 of the stator unit 100 can each be spaced from be arranged in the center area 460 of the stator unit 100, so that when one of the modular units 420, 422, 424, 426 is pressed with the stator unit 100, the further modular units 420, 422, 424, 426 are subjected to a load in addition to the connection arrangements 311, 312, 313, 314 arranged pressing tool is prevented.

Fig. 18 FIG. 11 shows a schematic perspective illustration of the underside of the power module 300 and the underside of the stator unit 100, the power module 300 being connected to the stator unit 100 via the connecting line 310. In Fig. 18 the electronic components arranged on the underside of the power module 300 are shown.

The connecting line 310 can be designed as a mechanically fixed or rigid connection between the power module 300 and the stator unit 100. At the same time, the connecting line 310 can be designed to be elastic enough to compensate for different thermal expansion, in particular due to different thermal expansion coefficients, of the stator unit 100 and the power module 300 without losing the electrical contact. A mechanically firm and rigid connection with simultaneous compensation of different thermal expansions can be achieved, among other things, if the connecting line 310 has contact means 315, 316, 317, 318 which comprise pin strips or press-in connectors.

The stator unit 100 and the power module 300 can be arranged at a defined distance from one another in the vertical direction 15 and the connecting line 310 can be designed to connect the stator unit 100 and the To connect power module 300 across the distance in an electrically conductive manner. The distance can be dimensioned in such a way that sufficient installation space is available between the stator unit 100 and the power module 300 for electronic components arranged on an upper side of the power module 300. A distance dimensioned in this way is provided in particular by the connecting line 310 with contact means 315, 316, 317, 318 designed as pin strips or press-in connectors. As an alternative or in addition, the distance can be dimensioned such that electromagnetic coupling between the conductor strips 125, 126 of the stator unit 100 and conductor surfaces or conductor tracks on the power module 300 is minimized. This is the case, inter alia, with the connecting line 310 with contact means 315, 316, 317, 318 designed as pin strips or press-in connectors. The distance can be, for example, between 2mm and 10mm, in particular 5mm.

In alternative, non-illustrated embodiments of the stator module 10, the contact means 319 can also comprise an electrical connector or a plurality of electrical connectors, which connect the connection arrangement 309 of the power module 300 and the contact arrangement 420 of the stator unit 100 in an electrically conductive manner. Contact means 315, 316, 317, 318 with electrical connectors can also be designed to connect the stator unit 100 and the power module 300 over the distance required for the arrangement of electronic components and / or to have an elasticity required to compensate for different thermal expansions and / or to establish a mechanically firm connection between stator unit 100 and power module 300. In further alternative embodiments of the stator module 10, the contact means 319 can also be designed as a soldered connection, the connection arrangement 309 of the power module 300 and the contact arrangement 420 of the stator unit 100 being designed as soldering contact surfaces and being connected in an electrically conductive manner via the soldering connection.

As in Fig. 18 is shown, the cross-shaped power module 300 covers the bottom surface 101 of the stator unit 100 in the region of the cross-shaped contact arrangement 420 of the stator unit 100. In particular, the power module 300 covers the contact arrangement 420 itself. Above the first stator sector 110, a first free space 61 is formed. In addition, as in Fig. 18 is shown, a second free space 62 can be formed above the second stator sector 112, a third free space 63 above the third stator sector 113 and a fourth free space 64 above the fourth stator sector 114. At the free spaces 61, 62, 63, 64, the bottom surface 101 of the stator unit 100 is not covered by the power module 300, i.e. is exposed, and the bottom surface 101 of the stator unit 100 is at the free spaces 61, 62, 63, 64 from the underside of the Power module 300 accessible.

In the free spaces 61, 62, 63, 64, more than 30% of the floor area 101 of the stator unit 100 can be accessible from the underside of the power module 300. In particular, more than 40%, more than 50%, in particular 52% to 60%, in particular 56% of the floor area 101 of the stator unit 100 can be accessible in the free spaces 61, 62, 63, 64. The first and third module units 320, 324 can each have an extension of 30 mm to 120 mm, in particular of 40 mm to 80 mm, in particular of 60 mm, in the first direction 12. The second and fourth module units 322, 326 can each have an extension of 30 mm to 120 mm, in particular from 40 mm to 80 mm, in particular 60 mm, in the second direction 14.

The free spaces 61, 62, 63, 64 are arranged above the stator sectors 110, 112, 113, 114 in each case in corner areas of the rectangular stator unit 100, the corner areas respectively on the outer edges running along the first direction 12 and along the second direction 14 30 of the stator unit 100 adjoin. The free spaces 61, 62, 63, 64 are rectangular and extend in the first and second direction 12, 14 in each case between one of the outer edges 30 of the stator unit 100 and an outer edge of the power module 300.

The first free space 61 adjoins the first module unit 320 and the fourth module unit 326. The first free space 61 is located or extends in the first direction 12 between the first module unit 320 and an outer edge 30 of the stator surface 11 running along the second direction 14 and in the second direction 14 between the fourth module unit 326 and one along the first direction 12 running outer edge 30 of the stator surface 11. The second free space 62 adjoins the first module unit 320 and the second module unit 322. The second free space 62 is located or extends in the first direction 12 between the first module unit 320 and an outer edge 30 of the stator surface 11 running along the second direction 14 and in the second direction 14 between the second module unit 322 and one along the first direction 12 extending outer edge 30 of the stator surface 11.

The third free space 63 adjoins the third module unit 324 and the fourth module unit 326. The third free space 63 is located or extends in the first direction 12 between the third module unit 324 and an outer edge 30 of the stator surface 11 running along the second direction 14 and in the second direction 14 between the fourth module unit 326 and one along the first direction 12 running outer edge 30 of the stator surface 11. The fourth free space 64 adjoins the second module unit 322 and the third module unit 324. The fourth free space 64 is located or extends in the first direction 12 between the third module unit 324 and an outer edge 30 of the stator surface 11 running along the second direction 14 and in the second direction 14 between the second module unit 322 and one along the first direction 12 extending outer edge 30 of the stator surface 11.

The first free space 61, the second free space 62, the third free space 63 and / or the fourth free space 64 can have an extension in the first direction 12 that is greater than an extension of the second bar 302 of the power module 300 in the first direction 12. The first free space 61, the second free space 62, the third free space 63 and / or the fourth free space 64 can have an extension in the second direction 14 that is greater than an extension of the first bar 301 of the power module 300 in the second direction 14.

The bars 301, 302 of the power module 300 are each arranged at a distance from the outer edges 30 of the stator unit 100. In particular, the first beam 301 is arranged at a distance in the first direction 12 from the outer edges 30 of the stator unit 100, which are aligned along the second direction 14, and the second beam 302 is in the second direction 14 from the outer edges 30 of the stator unit 100, which run along the first direction 12 spaced apart. As a result, the stator unit 100 can be arranged on the top of the module housing 19 of the stator module 10 in such a way that the outer edges 30 of the stator unit 100 are arranged in the vertical direction 15 in one plane with the side surfaces 34 of the module housing 19, and at the same time the power module 300 can be in the first and second directions 12, 14 are enclosed by a peripheral edge on the side surfaces 34 of the module housing 19.

The connecting line 310 can be designed as a mechanically rigid connection between the power module 300 and the stator unit 100. Alternatively, the connecting lines 310 can also be designed as a mechanically flexible connection with a flexible line, for example by means of a cable.

That in the Fig. 16 and 18th The power module 300 shown is composed of a total of four module units 320, 322, 324, 326 in a modular manner. Compared to a one-piece, The cross-shaped design of the power module 300 arises in relation to the board or printed circuit board of the power module 300 in the case of the Fig. 16 and 18th The illustrated modular embodiment of the power module 300 less scrap in the production of the four module units 320, 322, 324, 326. In addition, the contact means 319 can each be designed as a press-fit connector and, when the connection line 310 is formed, individually and one after the other with the relevant module unit 320, 322 , 324, 326 and the stator unit 100 are pressed. As a result, tilting of the contact means 319 during the pressing, as can easily occur when a plurality of contact means 315, 316, 317, 318 are pressed at the same time, can be avoided.

The power module 300 has a power generation unit which is designed to generate the drive power that drives the rotor 200 from drive energy provided via the coupling element 1127. The power generation unit is designed to generate a drive current applied as alternating current to the conductor strips 125, 126 from the drive energy provided via the coupling element 1127. The power generation unit can be designed to provide the drive current as a pulsed drive current, in particular as a pulse-width modulated drive current. To generate the drive current, the power generation unit can comprise switching units, in particular transistors.

In addition to the power generation unit, the power module 300 can also have further power generation units. The power module 300 can be designed to generate a separate drive current for each conductor strip 125, 126 that can be energized individually via the contact units 449. In particular, the power module 300 can each have its own power generation unit for each conductor strip 125, 126 to be powered individually. For example, the power module 300 can for each individual phase of the multi-phase systems of the stator unit 100 each have a separate power generation unit in order to generate a phase current for the corresponding phase as the drive current. For example, the power module 300 can each have a power generation unit for each of the three phases of a three-phase system of interconnected conductor strips 125, 126. The power generation units can be designed as electronic components, in particular as integrated circuits, which are arranged on the printed circuit board or the printed circuit boards of the power module 300.

Each stator sector 110, 112, 113, 114 can each comprise a first number of multi-phase systems, the conductor strips 125 of which are extended along the first direction 12, and a second number of multi-phase systems, the further conductor strips 126 of which are extended along the second direction 14. The first and second numbers can be the same. The multi-phase systems can each include a third number of individual phases. The power module 300 can comprise a power generation unit for each of the individual phases of the multiphase systems. Overall, the power module 300 can thus comprise a total number of power generation units per stator sector 110, 112, 113, 114 which corresponds to the sum of the product of the first and third numbers and the product of the second and third numbers.

The conductor strips 125, 126 of the stator unit 100 can, for example, be interconnected to form a total of twenty-four three-phase systems, with each stator sector 110, 112, 113, 114 each comprising six three-phase systems. Of the six three-phase systems of a sector 110, 112, 113, 114, three each can consist of conductor strips 125 extended in the first direction 12 and three each of further conductor strips 126 extended in the second direction 14. For a stator unit 100 having twenty-four three-phase systems, the power module 300 may include seventy-two power generation units for generating seventy-two drive or phase currents.

The module units 320, 322, 324, 326 each include all power generation units that are necessary for generating the drive currents for the conductor strips 125, 126 connected to the respective module unit 320, 322, 324, 326. The first module unit 320 comprises all power generation units that generate the drive currents in the conductor strips 125 of the first and second stator sectors 110, 112, which are aligned along the first direction 12. The second module unit 322 includes all power generation units that generate the drive currents in the further conductor strips 126 of the second and fourth stator sectors 112, 114, which are aligned along the second direction 14. The third module unit 324 comprises all power generation units that generate the drive currents in the conductor strips 125 of the third and fourth stator sectors 113, 114, which are aligned along the first direction 12. The fourth module unit 326 comprises all power generation units that generate the drive currents in the further conductor strips 126 of the first and third stator sectors 110, 113, which are aligned along the second direction 14.

Each of the four module units 320, 322, 324, 326 can each comprise a total number of power generation units that is twice the product of the first number of multi-phase systems with further conductor strips 126 extending along the second direction 14 and the third number of individual phases per multi-phase system or corresponds to twice the product of the second number of multiphase systems with conductor strips 125 extending along the first direction 12 and the third number of individual phases per multiphase system.

Each of the modular units 320, 322, 324, 326 can each comprise eighteen power generation units for generating eighteen drive currents. The eighteen drive currents can be generated as three phases each from six three-phase systems.

The power generation units are connected to the conductor strips 125, 126 of the stator unit 100 via drive power lines for the transmission of the drive currents. The drive power lines are implemented as part of the connecting line 310. The drive current lines are each routed via the contact means 319 of the connecting line 310. The power generation units of the first module unit 320 are connected via the drive power lines routed in the first contact means 315 to the conductor strips 125 of the first and second stator sectors 110, 112 oriented in the first direction 12. The power generation units of the second module unit 322 are connected via the drive power lines routed in the second contact means 316 to the further conductor strips 126 of the second and fourth stator sectors 112, 114, which are oriented in the second direction 14. The power generation units of the third module unit 324 are connected via the drive power lines routed in the third contact means 317 to the conductor strips 125 of the third and fourth stator sectors 113, 114, which are oriented in the first direction 12. The power generation units of the fourth module unit 326 are connected via the drive power lines routed in the fourth contact means 318 to the further conductor strips 126 of the first and third stator sectors 110, 113 oriented in the second direction 14.

The stator module 2 can be designed to generate drive currents with a current strength of more than 5A, in particular of more than 10A. The amperage of the drive currents can for example be 20A or 16A or 15A in continuous operation. In the case of a power module 300 comprising a printed circuit board, a metallization thickness of the conductor tracks carrying the drive current can be 35 μm to 200 μm, in particular 50 μm to 100 μm, in particular 70 μm. In particular, one, several or all conductor track layers of the power module 300 can have the same metallization thickness as the conductor tracks carrying the drive current.

In the stator module 10, the individual modules formed by the power module 300 and the stator unit 100 are each designed as flat plates that are extended in the first and second directions 12, 14. Since the plate-shaped individual modules are arranged one above the other in the vertical direction 15, a particularly flat design of the stator module 10 can be realized.

In the case of the stator module 10, the power module 300 is dimensioned and shaped such that the power module 300 extends neither in the first direction 12 nor in the second direction 14 completely over the entire width of the stator module 10 and in the first and second directions 12, 14 covers the entire cross-sectional area of the stator module 10. The only incomplete coverage of the cross-sectional area can be achieved in the case of the power module 300 through its cross-shaped shape and the free spaces 61, 62, 63, 64 resulting from the cross-shaped shape.

The only incomplete coverage of the cross-sectional areas of the stator module 10 in the plane of the power module 300 makes it possible to implement a heat-conducting connection between the bottom surface 101 of the stator unit 100 and a support surface on the underside 9 of the stator module 10. The thermally conductive connection can be established via large contact surfaces.

List of reference symbols

1

Planar propulsion system

3

another planar drive system

8th

Top

9

bottom

10

Stator module

11

Stator surface

12th

first direction

14th

second direction

15th

vertical direction

18th

Connecting cable

19th

Module housing

30th

Outer edge of the stator surface

32

Side surface of the stator unit

34

Side surface of the module housing

36

Side surface of the stator module

41

first outer edge of the stator surface

42

second outer edge of the stator surface

43

third outer edge of the stator surface

44

fourth outer edge of the stator surface

61

first free space

62

second space

63

third space

64

fourth space

100

Stator unit

101

Floor area

104

first stator position

105

second stator position

106

third stator position

107

fourth stator position

109

Connection stator position

110

first stator sector

112

second stator sector

113

third stator sector

114

fourth stator sector

117

first center line

118

second center line

119

Crossing point

120

first stator segments

121

second stator segments

122

internal stator segment

125

Ladder strip

126

further conductor strips

127

internal conductor strip

131

first ladder

132

first return conductor

141

second outward ladder

142

second return conductor

146

third ladder

147

third return conductor

150

first three-phase systems

151

second three-phase systems

152

first page

153

first page

154

first connection point

155

second connection point

156

third connection point

157

Star point

161

first outer edge

162

second outer edge

163

first inside edge

164

second inside edge

171

first outer edge

172

second outer edge

173

first inside edge

174

second inside edge

181

first outer edge

182

second outer edge

183

first inside edge

184

second inside edge

191

first outer edge

192

second outer edge

193

first inside edge

194

second inside edge

200

runner

201

Magnet arrangement

206

first runner direction

208

second runner direction

210

first magnet unit

211

Drive magnet

220

second magnet unit

221

further drive magnet

230

third magnet unit

240

fourth magnet unit

300

Power module

301

first bar

302

second bar

309

Connection arrangement

310

Connecting line

311

first connection arrangement

312

second connection arrangement

313

third connection arrangement

314

fourth connection arrangement

315

first contact means

316

second contact means

317

third contact means

318

fourth contact means

319

Contact means

320

first module unit

321

first connection means

322

second module unit

323

second connection means

324

third module unit

325

third connection means

326

fourth module unit

327

fourth connection means

420

Contact arrangement

421

first contact structure

422

second contact structure

423

third contact structure

424

fourth contact structure

441

first contact unit group

442

second contact unit group

443

third contact unit group

444

fourth contact unit group

445

fifth contact unit group

446

sixth contact unit group

447

seventh contact unit group

448

eighth contact unit group

449

Contact unit

460

Center area

471

first contact units

472

second contact units

473

third contact units

474

fourth contact units

475

fifth contact units

476

sixth contact units

477

seventh contact units

478

eighth contact units

479

ninth contact units

480

tenth contact units

481

eleventh contact units

482

twelfth contact units

483

thirteenth contact units

484

fourteenth contact units

485

fifteenth contact units

486

sixteenth contact units

487

seventeenth contact units

488

eighteenth contact units

601

Horizontal connection structure

602

Vertical connection structure

603

further vertical connection structure

700

first further stator unit

702

second further stator unit

1127

Coupling element

Claims (12)

1. Stator module (10) comprising a stator unit (100) for driving a rotor (200) of an electrical planar drive system (1),
   wherein the stator unit (100) comprises a first stator sector (110) and a second stator sector (112), wherein the first stator sector (110) comprises, in a stator layer (104, 106) of the stator unit (100), conductor strips (125), which are extended in an elongate manner along a first direction (12) and are arranged next to one another along a second direction (14) which is oriented perpendicularly to the first direction (12), for interacting with drive magnets (211, 221) of the rotor (200),
   wherein the second stator sector (112) comprises, in the stator layer (104, 106), conductor strips (125), which are extended in an elongate manner along the first direction (12) and are arranged next to one another along the second direction (14), for interacting with the drive magnets (211, 221) of the rotor (200), wherein the first stator sector (110) is arranged adjacent to the second stator sector (112) in the first direction (12),
   wherein the stator unit (100) has a contact structure (421),
   wherein the contact structure (421) comprises a first contact unit group (441) and a second contact unit group (442),
   wherein the first contact unit group (441) is electrically conductively connected to the conductor strips (125) of the first stator sector (110), and wherein the second contact unit group (442) is electrically conductively connected to the conductor strips (125) of the second stator sector (112),
   characterized in that
   a stator surface (11) extends over the entire top side (8) of the stator unit (100) and forms a surface of the stator unit (100),
   wherein the first stator sector (110) and the second stator sector (112) terminate flush with the stator surface (11) on the outer sides and are arranged in a manner adjoining one another in the interior of the stator unit (100),
   wherein the contact structure (421) is arranged on an inner edge (163) of the first stator sector (110) and on an inner edge (173) of the second stator sector (112) and is part of a contact arrangement (420),
   wherein the inner edge (163) of the first stator sector (110) and the inner edge (173) of the second stator sector (112) are arranged so as to bear against one another between the first stator sector (110) and the second stator sector (112), and the contact arrangement (420) can be contacted from the bottom side (9) of the stator unit (100).
2. Stator module (10) according to Claim 1,
   wherein the first contact unit group (441) and the second contact unit group (442) of the contact structure (421) are arranged next to one another in a row along the second direction (14).
3. Stator module (10) according to either of the preceding claims,
   wherein the contact structure (421) is arranged on a center line (118) of the stator unit (100), which center line runs between the first stator sector (110) and the second stator sector (112) along the second direction (14) .
4. Stator module (10) according to one of the preceding claims,
   wherein the stator unit (100) comprises a third stator sector (113),
   wherein the third stator sector (113) is arranged adjacent to the first stator sector (110) in the second direction (14),
   wherein the third stator sector (113) comprises, in the stator layer (104, 106), conductor strips (125), which are arranged next to one another along the second direction (14) and are extended in an elongate manner along the first direction (12), for interacting with the drive magnets (211, 221) of the rotor (200),
   wherein the first stator sector (110), the second stator sector (112) and the third stator sector (113) comprise, in a further stator layer (105), further conductor strips (126), which are arranged next to one another along the first direction (12) and are extended in an elongate manner along the second direction (14), for interacting with further drive magnets (211, 221) of the rotor (200),
   wherein the further stator layer (105) is arranged below the stator layer (104, 106) in a third direction (15) which is oriented perpendicularly to the first direction (12) and to the second direction (14),
   wherein the stator unit (100) comprises a further contact structure (424) with a third contact unit group (443) and with a fourth contact unit group (444),
   wherein the third contact unit group (443) is electrically conductively connected to the further conductor strips (126) of the first stator sector (110), and wherein the fourth contact unit group (444) is electrically conductively connected to the further conductor strips (126) of the third stator sector (113),
   wherein the further contact structure (424) is arranged on a further inner edge (164) of the first stator sector (110) and on an inner edge (184) of the third stator sector (113),
   wherein the further inner edge (164) of the first stator sector (110) and the inner edge (184) of the third stator sector (113) are arranged so as to bear against one another between the first stator sector (110) and the third stator sector (113).
5. Stator module (10) according to Claim 4, comprising a fourth stator sector (114),
   wherein the fourth stator sector (114) is arranged adjacent to the second stator sector (112) in the second direction (14),
   wherein the third stator sector (113) is arranged adjacent to the fourth stator sector (114) in the first direction (12),
   wherein the fourth stator sector (114) comprises, in the stator layer (104, 106), conductor strips (125), which are arranged next to one another along the second direction (14) and are extended in an elongate manner along the first direction (12), for interacting with the drive magnets (211, 221) of the rotor (200), wherein the fourth stator sector (114) comprises, in the further stator layer (105), further conductor strips (126), which are arranged next to one another along the first direction (12) and are extended in an elongate manner along the second direction (14), for interacting with the further drive magnets (211, 221) of the rotor (200),
   wherein the stator unit (100) comprises an additional contact structure (423) with a fifth contact unit group (445) and with a sixth contact unit group (446), wherein the stator unit (100) comprises a further additional contact structure (422) with a seventh contact unit group (447) and with an eighth contact unit group (448),
   wherein the fifth contact unit group (445) is electrically conductively connected to the conductor strips (125) of the third stator sector (113), and wherein the sixth contact unit group (446) is electrically conductively connected to the conductor strips (125) of the fourth stator sector (114), wherein the seventh contact unit group (447) is electrically conductively connected to the further conductor strips (126) of the second stator sector (112), and wherein the eighth contact unit group (448) is electrically conductively connected to the further conductor strips (126) of the fourth stator sector (114),
   wherein the additional contact structure (423) is arranged on a further inner edge (183) of the third stator sector (113) and on an inner edge (193) of the fourth stator sector (114),
   wherein the further inner edge (183) of the third stator sector (113) and the inner edge (193) of the fourth stator sector (114) are arranged so as to bear against one another between the third stator sector (113) and the fourth stator sector (114),
   wherein the further additional contact structure (422) is arranged on a further inner edge (174) of the second stator sector (112) and on a further inner edge (194) of the fourth stator sector (114),
   wherein the further inner edge (174) of the second stator sector (112) and the further inner edge (194) of the fourth stator sector (114) are arranged so as to bear against one another between the second stator sector (112) and the fourth stator sector (114).
6. Stator module (10) according to Claim 5,
   wherein the contact structure (421) and the additional contact structure (423) are arranged on a center line (118) of the stator unit (100), which center line is oriented along the second direction (14),
   wherein the further contact structure (424) and the further additional contact structure (422) are arranged on a further center line (117) of the stator unit (100), which further center line is oriented along the first direction (12).
7. Stator module (10) according to Claim 6,
   wherein the stator unit (100) has a center region (460) which is arranged at an intersection point (119) of the center line (118) and the further center line (117), wherein the contact unit groups (441, 442, 443, 444, 445, 446, 447, 448) are arranged outside the center region (460) of the stator unit (100).
8. Stator module (10) according to one of the preceding claims,
   wherein a conductor strip (127), which is close to the center, of the conductor strips (125) of the first stator sector (110) which are arranged in a connection stator layer (109) is electrically conductively connected to a contact unit of the first contact unit group (441) via a feed line,
   wherein the feed line is arranged in an additional stator layer (104, 106) of the stator unit (100).
9. Stator module (10) according to one of Claims 4 to 8 comprising a power module (300),
   wherein the power module (300) is arranged on a bottom side (9) of the stator unit (100),
   wherein the power module (300) is designed in a cruciform manner with a first bar (301) which runs in the first direction (12) and with a second bar (302) which runs in the second direction (14),
   wherein the power module (300) comprises a connection arrangement (311),
   wherein the connection arrangement (311) is electrically conductively connected to the first contact unit group (441) and to the second contact unit group (442) of the contact structure (421) of the stator unit (100),
   wherein the connection arrangement (311) is arranged on the second bar (302) of the power module (300), wherein the power module (300) comprises a further connection arrangement (314),
   wherein the further connection arrangement (314) is electrically conductively connected to the third contact unit group (443) and to the fourth contact unit group (444) of the further contact structure (424) of the stator unit (100),
   wherein the further connection arrangement (314) is arranged on the first bar (301) of the power module (300) .
10. Stator module (10) according to Claim 9,
    wherein the connection arrangement (311) is arranged centrally on the second bar (302) of the power module (300) in the first direction (121),
    wherein the further connection arrangement (314) is arranged centrally on the first bar (301) of the power module (300) in the second direction (14).
11. Stator module (10) according to either of Claims 9 and 10,
    wherein the power module (300) comprises a module unit (320) and a further module unit (326),
    wherein the module unit (320) and the further module unit (326) are designed in a manner mechanically separated from one another,
    wherein the first bar (301) of the power module (300) comprises the further module unit (326),
    wherein the further module unit (326) comprises the further connection arrangement (314),
    wherein the second bar (302) of the power module (300) comprises the module unit (320),
    wherein the module unit (320) comprises the connection arrangement (311).
12. Stator module (10) according to Claim 11,
    wherein a conductor arrangement of the module unit (320) and a conductor arrangement of the further module unit (326) are identical.

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